p H 计的使用及维护，您还清楚的记得么？

portant; word-wrap: break-word !important; color: rgb(225, 117, 94); font-family: 宋体; letter-spacing: 0.2pt;">新购置的电极使用前应在蒸馏水中浸泡24h

portant; word-wrap: break-word !important; font-size: 16px;">portant; word-wrap: break-word !important;">一、portant; word-wrap: break-word !important; line-height: 15.3333320617676px; font-size: 10pt;">pportant; word-wrap: break-word !important; line-height: 15.3333320617676px; letter-spacing: -1.7pt; font-size: 10pt;"> portant; word-wrap: break-word !important; line-height: 15.3333320617676px; font-size: 10pt;">Hportant; word-wrap: break-word !important; line-height: 15.3333320617676px; letter-spacing: -0.95pt; font-size: 10pt;"> portant; word-wrap: break-word !important; font-family: 宋体; letter-spacing: -0.2pt; font-size: 10.5pt;">portant; word-wrap: break-word !important;">计的球泡是用极薄的特种玻璃制成 portant; word-wrap: break-word !important; line-height: 15.3333320617676px; letter-spacing: 0.2pt; font-size: 10pt;">,portant; word-wrap: break-word !important;">极易portant; word-wrap: break-word !important; font-family: 宋体; letter-spacing: -1pt; font-size: 10.5pt;">portant; word-wrap: break-word !important;">碰破 portant; word-wrap: break-word !important; line-height: 15.3333320617676px; font-size: 10pt;">,portant; word-wrap: break-word !important;">取下帽后要注意防止塑料保护栅内的敏感portant; word-wrap: break-word !important; font-family: 宋体; letter-spacing: -0.4pt; font-size: 10.5pt;">portant; word-wrap: break-word !important;">玻璃泡与硬物接触 portant; word-wrap: break-word !important; line-height: 15.3333320617676px; letter-spacing: 0.5pt; font-size: 10pt;">,portant; word-wrap: break-word !important;">任何破损和擦毛都会使电极portant; word-wrap: break-word !important; font-family: 宋体; letter-spacing: -0.8pt; font-size: 10.5pt;">portant; word-wrap: break-word !important;">失效 portant; word-wrap: break-word !important; line-height: 15.3333320617676px; font-size: 10pt;">,portant; word-wrap: break-word !important; font-family: 宋体; letter-spacing: -0.35pt; font-size: 10.5pt;">portant; word-wrap: break-word !important;">使用时需特别小心 portant; word-wrap: break-word !important; line-height: 15.3333320617676px; font-size: 10pt;">,portant; word-wrap: break-word !important;">切勿与它物碰撞并保持portant; word-wrap: break-word !important;">高度清洁。

portant; word-wrap: break-word !important; font-size: 16px;">portant; word-wrap: break-word !important;">二portant; word-wrap: break-word !important;">、portant; word-wrap: break-word !important;">球泡部分有裂纹portant; word-wrap: break-word !important; font-family: 宋体; letter-spacing: -0.95pt; font-size: 10.5pt;">portant; word-wrap: break-word !important;">、破碎或擦伤时 portant; word-wrap: break-word !important; line-height: 15.3333320617676px; letter-spacing: 0.6pt; font-size: 10pt;">,portant; word-wrap: break-word !important;">不能使用portant; word-wrap: break-word !important; line-height: 15.3333320617676px; font-size: 10pt;">; portant; word-wrap: break-word !important; font-family: 宋体; letter-spacing: -0.45pt; font-size: 10.5pt;">portant; word-wrap: break-word !important;">放置时间超过 portant; word-wrap: break-word !important; line-height: 15.3333320617676px; font-size: 10pt;">2 portant; word-wrap: break-word !important; font-family: 宋体; letter-spacing: -0.95pt; font-size: 10.5pt;">portant; word-wrap: break-word !important;">年后 portant; word-wrap: break-word !important; line-height: 15.3333320617676px; font-size: 10pt;">,portant; word-wrap: break-word !important; font-family: 宋体; letter-spacing: -0.4pt; font-size: 10.5pt;">portant; word-wrap: break-word !important;">灵敏度会降低 portant; word-wrap: break-word !important; line-height: 15.3333320617676px; font-size: 10pt;">,portant; word-wrap: break-word !important;">此电极便不portant; word-wrap: break-word !important; font-family: 宋体; letter-spacing: -0.65pt; font-size: 10.5pt;">portant; word-wrap: break-word !important;">能再用 portant; word-wrap: break-word !important; line-height: 15.3333320617676px; font-size: 10pt;">,portant; word-wrap: break-word !important;">否则易造成portant; word-wrap: break-word !important; line-height: 15.3333320617676px; font-size: 10pt;">p H portant; word-wrap: break-word !important;">计计量失准现象。

portant; word-wrap: break-word !important; font-size: 16px; letter-spacing: -0.55pt; font-family: 宋体;">三portant; word-wrap: break-word !important; font-size: 16px; line-height: 18.3999996185303px; font-family: 宋体;">、portant; word-wrap: break-word !important; font-size: 10.5pt; font-family: 宋体; letter-spacing: -0.55pt;">portant; word-wrap: break-word !important;">每次测量前 portant; word-wrap: break-word !important; font-size: 10pt; line-height: 15.3333320617676px;">,portant; word-wrap: break-word !important; font-size: 16px; letter-spacing: 0.1pt; font-family: 宋体;">电极及试剂杯均应充分洗净portant; word-wrap: break-word !important; font-size: 10pt; line-height: 15.3333320617676px; letter-spacing: 0.45pt; top: -0.5pt;">(portant; word-wrap: break-word !important; font-size: 16px; font-family: 宋体;">最portant; word-wrap: break-word !important; font-size: 16px; letter-spacing: 0.05pt; font-family: 宋体;">好用被测溶液冲洗干净portant; word-wrap: break-word !important; font-size: 10pt; line-height: 15.3333320617676px; letter-spacing: 0.2pt; top: -0.5pt;">) portant; word-wrap: break-word !important; font-size: 16px; font-family: 宋体;">。在测定弱缓冲作用的portant; word-wrap: break-word !important; font-size: 10.5pt; font-family: 宋体; letter-spacing: -0.8pt;">portant; word-wrap: break-word !important;">溶液时 portant; word-wrap: break-word !important; font-size: 10pt; line-height: 15.3333320617676px;">,portant; word-wrap: break-word !important; font-size: 16px; letter-spacing: 0.1pt; font-family: 宋体;">玻璃电极表面往往不易平衡portant; word-wrap: break-word !important; font-size: 10pt; line-height: 15.3333320617676px; letter-spacing: 0.45pt; top: -0.5pt;">(portant; word-wrap: break-word !important; font-size: 16px; font-family: 宋体;">电极在测定portant; word-wrap: break-word !important; font-size: 10.5pt; font-family: 宋体; letter-spacing: -0.4pt;">portant; word-wrap: break-word !important;">前虽经充分冲洗 portant; word-wrap: break-word !important; font-size: 10pt; line-height: 15.3333320617676px; letter-spacing: 0.5pt;">,portant; word-wrap: break-word !important; font-size: 16px; letter-spacing: 0.35pt; font-family: 宋体;">但读数仍有逐渐改变的现象portant; word-wrap: break-word !important; font-size: 10pt; line-height: 15.3333320617676px; letter-spacing: 0.95pt; top: -0.5pt;">) portant; word-wrap: break-word !important; font-size: 10pt; line-height: 15.3333320617676px;">, portant; word-wrap: break-word !important; font-size: 10.5pt; font-family: 宋体; letter-spacing: -0.25pt;">portant; word-wrap: break-word !important;">此时宜重换一份被测液再测 portant; word-wrap: break-word !important; font-size: 10pt; line-height: 15.3333320617676px; letter-spacing: 0.2pt;">,portant; word-wrap: break-word !important; font-size: 10.5pt; font-family: 宋体; letter-spacing: -0.4pt;">portant; word-wrap: break-word !important;">直到读数在 portant; word-wrap: break-word !important; font-size: 10pt; line-height: 15.3333320617676px; letter-spacing: -0.2pt;">1minportant; word-wrap: break-word !important; font-size: 10pt; line-height: 15.3333320617676px; letter-spacing: -0.05pt;"> portant; word-wrap: break-word !important; font-size: 16px; font-family: 宋体;">内portant; word-wrap: break-word !important; font-size: 10.5pt; font-family: 宋体; letter-spacing: -0.7pt;">portant; word-wrap: break-word !important;">改变不超 ±portant; word-wrap: break-word !important; font-size: 10pt; line-height: 15.3333320617676px; letter-spacing: -0.7pt;">0portant; word-wrap: break-word !important; line-height: 16.1000003814697px; letter-spacing: -0.7pt; font-size: 14px;">portant; word-wrap: break-word !important; font-family: 'Palatino Linotype';">.portant; word-wrap: break-word !important; font-size: 10pt; line-height: 15.3333320617676px; letter-spacing: -0.7pt;">05 portant; word-wrap: break-word !important; font-size: 10pt; line-height: 15.3333320617676px; letter-spacing: 0.15pt; top: -0.5pt;">(portant; word-wrap: break-word !important; font-size: 10pt; line-height: 15.3333320617676px; letter-spacing: 0.15pt;">pportant; word-wrap: break-word !important; font-size: 10pt; line-height: 15.3333320617676px; letter-spacing: -1.6pt;"> portant; word-wrap: break-word !important; font-size: 10pt; line-height: 15.3333320617676px; letter-spacing: -0.2pt;">Hportant; word-wrap: break-word !important; font-size: 10pt; line-height: 15.3333320617676px; letter-spacing: -0.25pt; top: -0.5pt;">) portant; word-wrap: break-word !important; font-size: 10.5pt; font-family: 宋体; letter-spacing: -0.75pt;">portant; word-wrap: break-word !important;">为止 portant; word-wrap: break-word !important; font-size: 10pt; line-height: 15.3333320617676px; letter-spacing: 0.5pt;">,portant; word-wrap: break-word !important; font-size: 16px; letter-spacing: 0.3pt; font-family: 宋体;">取最后一份读数为溶portant; word-wrap: break-word !important; font-size: 16px; letter-spacing: 0.8pt; font-family: 宋体;">液的portant; word-wrap: break-word !important; font-size: 10pt; line-height: 15.3333320617676px;">pportant; word-wrap: break-word !important; font-size: 10pt; line-height: 15.3333320617676px; letter-spacing: -1.6pt;"> portant; word-wrap: break-word !important; font-size: 10pt; line-height: 15.3333320617676px;">H portant; word-wrap: break-word !important; font-size: 10.5pt; font-family: 宋体; letter-spacing: -1.3pt;">portant; word-wrap: break-word !important;">值 portant; word-wrap: break-word !important; font-size: 10pt; line-height: 15.3333320617676px; letter-spacing: 0.7pt;">,portant; word-wrap: break-word !important; font-size: 16px; letter-spacing: 0.4pt; font-family: 宋体;">有时需换测三至五份。在测定极稀portant; word-wrap: break-word !important; font-size: 10.5pt; font-family: 宋体; letter-spacing: -0.45pt;">portant; word-wrap: break-word !important;">溶液或蒸馏水时 portant; word-wrap: break-word !important; font-size: 10pt; line-height: 15.3333320617676px; letter-spacing: 0.5pt;">,portant; word-wrap: break-word !important; font-size: 16px; letter-spacing: 0.3pt; font-family: 宋体;">其读数会随校正仪器所用缓冲portant; word-wrap: break-word !important; font-size: 10.5pt; font-family: 宋体; letter-spacing: -0.85pt;">portant; word-wrap: break-word !important;">液的 portant; word-wrap: break-word !important; font-size: 10pt; line-height: 15.3333320617676px;">pportant; word-wrap: break-word !important; font-size: 10pt; line-height: 15.3333320617676px; letter-spacing: -1.6pt;"> portant; word-wrap: break-word !important; font-size: 10pt; line-height: 15.3333320617676px;">H portant; word-wrap: break-word !important; font-size: 10.5pt; font-family: 宋体; letter-spacing: -0.45pt;">portant; word-wrap: break-word !important;">值而异 portant; word-wrap: break-word !important; font-size: 10pt; line-height: 15.3333320617676px; letter-spacing: 0.7pt;">,portant; word-wrap: break-word !important; font-size: 16px; letter-spacing: 0.4pt; font-family: 宋体;">用酸性缓冲液校正后测定值偏portant; word-wrap: break-word !important; font-size: 10.5pt; font-family: 宋体; letter-spacing: -1.25pt;">portant; word-wrap: break-word !important;">酸 portant; word-wrap: break-word !important; font-size: 10pt; line-height: 15.3333320617676px;">,portant; word-wrap: break-word !important; font-size: 10.5pt; font-family: 宋体; letter-spacing: -0.2pt;">portant; word-wrap: break-word !important;">而用碱性缓冲液校正后测定值偏碱 portant; word-wrap: break-word !important; font-size: 10pt; line-height: 15.3333320617676px;">,portant; word-wrap: break-word !important; font-size: 16px; font-family: 宋体;">因此在测portant; word-wrap: break-word !important; font-size: 10.5pt; font-family: 宋体; letter-spacing: -0.25pt;">portant; word-wrap: break-word !important;">定极稀溶液或蒸馏水时 portant; word-wrap: break-word !important; font-size: 10pt; line-height: 15.3333320617676px; letter-spacing: 0.5pt;">,portant; word-wrap: break-word !important; font-size: 16px; letter-spacing: 0.3pt; font-family: 宋体;">应用邻苯二钾酸氢钾标portant; word-wrap: break-word !important; font-size: 16px; letter-spacing: 0.25pt; font-family: 宋体;">准缓冲液portant; word-wrap: break-word !important; font-size: 10pt; line-height: 15.3333320617676px; letter-spacing: 0.45pt; top: -0.5pt;">(portant; word-wrap: break-word !important; font-size: 10.5pt; font-family: 宋体; letter-spacing: -1.4pt;">portant; word-wrap: break-word !important;">在 portant; 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word-wrap: break-word !important; font-size: 10.5pt; font-family: 宋体; letter-spacing: -0.35pt;">portant; word-wrap: break-word !important;">校正仪器 portant; word-wrap: break-word !important; font-size: 10pt; line-height: 15.3333320617676px; letter-spacing: 0.5pt;">,portant; word-wrap: break-word !important; font-size: 16px; letter-spacing: 0.25pt; font-family: 宋体;">按上述法portant; word-wrap: break-word !important; font-size: 10.5pt; font-family: 宋体; letter-spacing: -0.25pt;">portant; word-wrap: break-word !important;">测定待测液 portant; word-wrap: break-word !important; font-size: 10pt; line-height: 15.3333320617676px;">,portant; word-wrap: break-word !important; font-size: 16px; letter-spacing: 0.3pt; font-family: 宋体;">再用硼砂标准缓冲液portant; word-wrap: break-word !important; font-size: 10pt; line-height: 15.3333320617676px; letter-spacing: 0.75pt; top: -0.5pt;">(portant; word-wrap: break-word !important; font-size: 10.5pt; font-family: 宋体; letter-spacing: -1.2pt;">portant; word-wrap: break-word !important;">在 portant; word-wrap: break-word !important; font-size: 10pt; line-height: 15.3333320617676px;">25 portant; word-wrap: break-word !important; font-size: 10.5pt; font-family: 宋体; letter-spacing: -1.7pt;">℃时 portant; word-wrap: break-word !important; font-size: 10pt; line-height: 15.3333320617676px;">pportant; word-wrap: break-word !important; font-size: 10pt; line-height: 15.3333320617676px; letter-spacing: -1.6pt;"> portant; word-wrap: break-word !important; font-size: 10pt; line-height: 15.3333320617676px;">Hportant; word-wrap: break-word !important; text-align: left; text-indent: 0pt; letter-spacing: -0.4pt; font-size: 10pt;">= portant; word-wrap: break-word !important; text-align: left; text-indent: 0pt; letter-spacing: -0.15pt; font-size: 10pt;">9portant; word-wrap: break-word !important; text-align: left; text-indent: 0pt; letter-spacing: -0.15pt; font-size: 14px;">portant; word-wrap: break-word !important; font-family: 'Palatino Linotype';">.portant; word-wrap: break-word !important; text-align: left; text-indent: 0pt; letter-spacing: -0.15pt; font-size: 10pt;">18portant; word-wrap: break-word !important; text-align: left; text-indent: 0pt; letter-spacing: -0.5pt; font-size: 10pt; top: -0.5pt;">) portant; word-wrap: break-word !important; text-align: left; text-indent: 0pt; font-family: 宋体; letter-spacing: -0.25pt; font-size: 10.5pt;">portant; word-wrap: break-word !important; font-size: 16px;">校正仪器后测定待测液 portant; word-wrap: break-word !important; text-align: left; text-indent: 0pt; letter-spacing: 0.3pt; font-size: 10pt;">,portant; word-wrap: break-word !important; text-align: left; text-indent: 0pt; letter-spacing: 0.1pt; font-family: 宋体;">有时待测液需换portant; word-wrap: break-word !important; text-align: left; text-indent: 0pt; font-size: 10.5pt; font-family: 宋体; line-height: 15.539999961853px;">portant; word-wrap: break-word !important; font-size: 16px;">五至六份 portant; word-wrap: break-word !important; text-align: left; text-indent: 0pt; font-size: 10pt; line-height: 14.8000001907349px;">,portant; word-wrap: break-word !important; text-align: left; text-indent: 0pt; font-size: 10.5pt; font-family: 宋体; line-height: 15.539999961853px;">portant; word-wrap: break-word !important; font-size: 16px;">两次校正的最后两份的 portant; word-wrap: break-word !important; text-align: left; text-indent: 0pt; font-size: 10pt; line-height: 14.8000001907349px;">p H portant; word-wrap: break-word !important; text-align: left; text-indent: 0pt; font-size: 10.5pt; font-family: 宋体; line-height: 15.539999961853px;">portant; word-wrap: break-word !important; font-size: 16px;">值差应不大于 portant; word-wrap: break-word !important; text-align: left; text-indent: 0pt; font-size: 10pt; line-height: 14.8000001907349px;">0portant; word-wrap: break-word !important; text-align: left; text-indent: 0pt; line-height: 15.539999961853px; font-size: 14px;">portant; word-wrap: break-word !important; font-family: 'Palatino Linotype';">.portant; word-wrap: break-word !important; text-align: left; text-indent: 0pt; font-size: 10pt; line-height: 14.8000001907349px;">1 ,portant; word-wrap: break-word !important; text-align: left; text-indent: 0pt; line-height: 18.8700008392334px; font-family: 宋体;">取其平均值为溶液的portant; word-wrap: break-word !important; text-align: left; text-indent: 0pt; font-size: 10pt; line-height: 14.8000001907349px;">p H portant; word-wrap: break-word !important; text-align: left; text-indent: 0pt; line-height: 18.8700008392334px; font-family: 宋体;">值。

portant; word-wrap: break-word !important; font-size: 16px;">portant; word-wrap: break-word !important;">四portant; word-wrap: break-word !important;">、portant; word-wrap: break-word !important; font-family: 宋体; font-size: 10.5pt;">portant; word-wrap: break-word !important;">在校准前应特别注意待测溶液的温度。不同的温度下 portant; word-wrap: break-word !important; line-height: 15.3333320617676px; font-size: 10pt;">, portant; word-wrap: break-word !important; font-family: 宋体; font-size: 10.5pt;">portant; word-wrap: break-word !important;">标准缓冲溶液的 portant; word-wrap: break-word !important; line-height: 15.3333320617676px; font-size: 10pt;">p H portant; word-wrap: break-word !important; font-family: 宋体; font-size: 10.5pt;">portant; word-wrap: break-word !important;">值是不一样的。待测溶液的温度必须与标准缓冲溶液相同 portant; word-wrap: break-word !important; line-height: 15.3333320617676px; font-size: 10pt;">,portant; word-wrap: break-word !important;">否则需调节温度补偿器置于被测溶液的温度。

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portant; word-wrap: break-word !important; font-family: 宋体; font-size: 14px;">①portant; word-wrap: break-word !important;">溶液温度与定标温度有较大的差异时。

portant; word-wrap: break-word !important; font-size: 14px; font-family: 宋体; letter-spacing: 0px;">②portant; word-wrap: break-word !important;">电极在空气中暴露过久 portant; word-wrap: break-word !important; font-size: 13px;">,portant; word-wrap: break-word !important; font-size: 14px; font-family: 宋体; letter-spacing: -2px;">portant; word-wrap: break-word !important;">如 portant; word-wrap: break-word !important; font-size: 13px;">0portant; word-wrap: break-word !important; font-family: 'Palatino Linotype';">portant; word-wrap: break-word !important; font-size: 14px;">.portant; word-wrap: break-word !important; font-size: 13px;">5hportant; word-wrap: break-word !important; font-size: 13px; letter-spacing: 0px;"> portant; word-wrap: break-word !important; font-size: 16px; letter-spacing: 0px; font-family: 宋体;">以上时。

portant; word-wrap: break-word !important; font-family: 宋体; letter-spacing: 0px; font-size: 14px;">③portant; word-wrap: break-word !important;">定位或斜率调节器被误动。

portant; word-wrap: break-word !important; font-size: 16px;">portant; word-wrap: break-word !important; font-family: 宋体; letter-spacing: 1px; font-size: 14px;">④portant; word-wrap: break-word !important;">测量过酸portant; word-wrap: break-word !important; letter-spacing: 0px; font-size: 13px; top: -1px;">(portant; word-wrap: break-word !important; letter-spacing: 0px; font-size: 13px;">pportant; word-wrap: break-word !important; letter-spacing: -2px; font-size: 13px;"> portant; word-wrap: break-word !important; font-size: 13px;">Hportant; word-wrap: break-word !important; letter-spacing: 0px; font-size: 13px;"> < 2portant; word-wrap: break-word !important; font-size: 13px; top: -1px;">) portant; word-wrap: break-word !important;">或过碱portant; word-wrap: break-word !important; letter-spacing: 0px; font-size: 13px; top: -1px;">(portant; word-wrap: break-word !important; letter-spacing: 0px; font-size: 13px;">pportant; word-wrap: break-word !important; letter-spacing: -2px; font-size: 13px;"> portant; word-wrap: break-word !important; font-size: 13px;">Hportant; word-wrap: break-word !important; letter-spacing: 0px; font-size: 13px;"> > portant; word-wrap: break-word !important; font-size: 13px;">12portant; word-wrap: break-word !important; letter-spacing: 0px; font-size: 13px; top: -1px;">) portant; word-wrap: break-word !important;">的溶portant; word-wrap: break-word !important;">液后。

portant; word-wrap: break-word !important; font-family: 宋体; letter-spacing: 0px; font-size: 14px;">⑤portant; word-wrap: break-word !important;">换过电极后。

portant; word-wrap: break-word !important; font-size: 16px;">portant; word-wrap: break-word !important; font-family: 宋体; font-size: 14px;">⑥portant; word-wrap: break-word !important;">当所测溶液的 portant; word-wrap: break-word !important; font-size: 13px;">pportant; word-wrap: break-word !important; letter-spacing: -2px; font-size: 13px;"> portant; word-wrap: break-word !important; font-size: 13px;">H portant; word-wrap: break-word !important;">值不在两点定标时所portant; word-wrap: break-word !important; font-family: 宋体; letter-spacing: -1px; font-size: 14px;">portant; word-wrap: break-word !important;">选溶液的中间 portant; word-wrap: break-word !important; font-size: 13px;">,portant; word-wrap: break-word !important;">且距portant; word-wrap: break-word !important; font-size: 13px;">pportant; word-wrap: break-word !important; letter-spacing: -2px; font-size: 13px;"> portant; word-wrap: break-word !important; font-size: 13px;">Hportant; word-wrap: break-word !important; letter-spacing: 0px; font-size: 13px;"> = portant; word-wrap: break-word !important; font-size: 13px;">7 portant; word-wrap: break-word !important;">又较远时。

portant; word-wrap: break-word !important; font-size: 16px;">portant; word-wrap: break-word !important; letter-spacing: 0px; font-family: 宋体;">校正仪器用的标准缓冲液与测定的准确度有portant; word-wrap: break-word !important; font-family: 宋体; letter-spacing: -1px;">portant; word-wrap: break-word !important;">直接关系 portant; word-wrap: break-word !important; line-height: 18.2399997711182px;">,portant; word-wrap: break-word !important; letter-spacing: 0px; font-family: 宋体;">配制和保存标准缓冲溶液应注意portant; word-wrap: break-word !important; line-height: 18.2399997711182px;">:

portant; word-wrap: break-word !important; font-size: 16px;">portant; word-wrap: break-word !important; font-family: 宋体; font-size: 13px;">①portant; word-wrap: break-word !important; font-size: 13px;">pportant; word-wrap: break-word !important; letter-spacing: -2px; font-size: 13px;"> portant; word-wrap: break-word !important; font-size: 13px;">Hportant; word-wrap: break-word !important; letter-spacing: -1px; font-size: 13px;"> portant; word-wrap: break-word !important; font-family: 宋体; letter-spacing: 0px; font-size: 14px;">portant; word-wrap: break-word !important;">标准物质应保存在干燥的地方 portant; word-wrap: break-word !important; letter-spacing: 1px; font-size: 13px;">,portant; word-wrap: break-word !important;">如混portant; word-wrap: break-word !important;">合磷酸盐portant; word-wrap: break-word !important; font-size: 13px;">pportant; word-wrap: break-word !important; letter-spacing: -2px; font-size: 13px;"> portant; word-wrap: break-word !important; font-size: 13px;">Hportant; word-wrap: break-word !important; letter-spacing: -1px; font-size: 13px;"> portant; word-wrap: break-word !important;">标准物质在空气湿度较大时就会发portant; word-wrap: break-word !important; font-family: 宋体; letter-spacing: -1px; font-size: 14px;">portant; word-wrap: break-word !important;">生潮解 portant; word-wrap: break-word !important; font-size: 13px;">,portant; word-wrap: break-word !important; font-family: 宋体; letter-spacing: -1px; font-size: 14px;">portant; word-wrap: break-word !important;">一旦出现潮解 portant; word-wrap: break-word !important; letter-spacing: 0px; font-size: 13px;">,pportant; word-wrap: break-word !important; letter-spacing: -2px; font-size: 13px;"> portant; word-wrap: break-word !important; font-size: 13px;">Hportant; word-wrap: break-word !important; letter-spacing: -1px; font-size: 13px;"> portant; word-wrap: break-word !important;">标准物质即不可使用。

portant; word-wrap: break-word !important; font-size: 14px; font-family: 宋体; letter-spacing: -1px;">②portant; word-wrap: break-word !important;">配制 portant; word-wrap: break-word !important; font-size: 13px;">pportant; word-wrap: break-word !important; font-size: 13px; letter-spacing: -2px;"> portant; word-wrap: break-word !important; font-size: 13px;">H portant; word-wrap: break-word !important; font-size: 16px; letter-spacing: 1px; font-family: 宋体;">标准溶液应使用二次蒸馏水或portant; word-wrap: break-word !important; font-size: 14px; font-family: 宋体; letter-spacing: 0px;">portant; word-wrap: break-word !important;">者是去离子水。如果是用于 portant; word-wrap: break-word !important; font-size: 13px; letter-spacing: 0px;">0portant; word-wrap: break-word !important; letter-spacing: 0px; font-size: 14px;">portant; word-wrap: break-word !important; font-family: 'Palatino Linotype';">.portant; word-wrap: break-word !important; font-size: 13px; letter-spacing: 0px;">1portant; word-wrap: break-word !important; font-size: 13px;"> portant; word-wrap: break-word !important; font-size: 16px; letter-spacing: 3px; font-family: 宋体;">级portant; word-wrap: break-word !important; font-size: 13px;">pportant; word-wrap: break-word !important; font-size: 13px; letter-spacing: -2px;"> portant; word-wrap: break-word !important; font-size: 13px;">Hportant; word-wrap: break-word !important; font-size: 13px; letter-spacing: -1px;"> portant; word-wrap: break-word !important; font-size: 14px; font-family: 宋体; letter-spacing: -1px;">portant; word-wrap: break-word !important;">计测量 portant; word-wrap: break-word !important; font-size: 13px;">,portant; word-wrap: break-word !important; font-size: 16px; font-family: 宋体;">则portant; word-wrap: break-word !important; font-size: 16px; letter-spacing: 0px; font-family: 宋体;">可以用普通蒸馏水。

portant; word-wrap: break-word !important; font-size: 16px;">portant; word-wrap: break-word !important; font-family: 宋体; letter-spacing: -1px; font-size: 14px;">③portant; word-wrap: break-word !important;">配制 portant; word-wrap: break-word !important; font-size: 13px;">pportant; word-wrap: break-word !important; letter-spacing: -2px; font-size: 13px;"> portant; word-wrap: break-word !important; font-size: 13px;">H portant; word-wrap: break-word !important;">标准溶液应使用较小的烧杯来portant; word-wrap: break-word !important; font-family: 宋体; letter-spacing: -1px; font-size: 14px;">portant; word-wrap: break-word !important;">稀释 portant; word-wrap: break-word !important; font-size: 13px;">,portant; word-wrap: break-word !important; font-family: 宋体; letter-spacing: 0px; font-size: 14px;">portant; word-wrap: break-word !important;">以减少沾在烧杯壁上的 portant; word-wrap: break-word !important; font-size: 13px;">pportant; word-wrap: break-word !important; letter-spacing: -2px; font-size: 13px;"> portant; word-wrap: break-word !important; font-size: 13px;">Hportant; word-wrap: break-word !important; letter-spacing: 0px; font-size: 13px;"> portant; word-wrap: break-word !important;">标准液。存放portant; word-wrap: break-word !important; letter-spacing: 0px; font-size: 13px;">pportant; word-wrap: break-word !important; letter-spacing: -2px; font-size: 13px;"> portant; word-wrap: break-word !important; font-size: 13px;">Hportant; word-wrap: break-word !important; letter-spacing: -1px; font-size: 13px;"> portant; word-wrap: break-word !important; font-family: 宋体; letter-spacing: 0px; font-size: 14px;">portant; word-wrap: break-word !important;">标准物质的塑料袋或其他容器 portant; word-wrap: break-word !important; letter-spacing: 0px; font-size: 13px;">,portant; word-wrap: break-word !important;">除了应倒干净portant; word-wrap: break-word !important; font-family: 宋体; letter-spacing: -1px; font-size: 14px;">portant; word-wrap: break-word !important;">以外 portant; word-wrap: break-word !important; font-size: 13px;">,portant; word-wrap: break-word !important; font-family: 宋体; letter-spacing: 0px; font-size: 14px;">portant; word-wrap: break-word !important;">还应用蒸馏水多次冲洗 portant; word-wrap: break-word !important; font-size: 13px;">,portant; word-wrap: break-word !important;">然后将其倒入配制portant; word-wrap: break-word !important;">的portant; word-wrap: break-word !important; font-size: 13px;">pportant; word-wrap: break-word !important; letter-spacing: -2px; font-size: 13px;"> portant; word-wrap: break-word !important; font-size: 13px;">Hportant; word-wrap: break-word !important; letter-spacing: -1px; font-size: 13px;"> portant; word-wrap: break-word !important; font-family: 宋体; letter-spacing: -1px; font-size: 14px;">portant; word-wrap: break-word !important;">标准溶液中 portant; word-wrap: break-word !important; font-size: 13px;">,portant; word-wrap: break-word !important;">以保证配制的portant; word-wrap: break-word !important; font-size: 13px;">pportant; word-wrap: break-word !important; letter-spacing: -2px; font-size: 13px;"> portant; word-wrap: break-word !important; font-size: 13px;">Hportant; word-wrap: break-word !important; letter-spacing: -1px; font-size: 13px;"> portant; word-wrap: break-word !important;">标准溶液准portant; word-wrap: break-word !important;">确无误。

portant; word-wrap: break-word !important; font-size: 16px;">portant; word-wrap: break-word !important; font-family: 宋体; letter-spacing: 0px; font-size: 14px;">④portant; word-wrap: break-word !important;">配制好的标准缓冲溶液一般可保存 portant; word-wrap: break-word !important; letter-spacing: 0px; font-size: 13px;">2portant; word-wrap: break-word !important;">～portant; word-wrap: break-word !important; letter-spacing: 0px; font-size: 13px;">3 portant; word-wrap: break-word !important; font-family: 宋体; letter-spacing: -1px; font-size: 14px;">portant; word-wrap: break-word !important;">个月 portant; word-wrap: break-word !important; letter-spacing: 1px; font-size: 13px;">,portant; word-wrap: break-word !important;">如发现有浑浊portant; word-wrap: break-word !important; font-family: 宋体; letter-spacing: -1px; font-size: 14px;">portant; word-wrap: break-word !important;">、发霉或沉淀等现象时 portant; word-wrap: break-word !important; letter-spacing: 1px; font-size: 13px;">,portant; word-wrap: break-word !important;">不能继续使用。

portant; word-wrap: break-word !important; font-size: 16px;">portant; word-wrap: break-word !important; font-family: 宋体; letter-spacing: 0px; font-size: 14px;">⑤portant; word-wrap: break-word !important;">碱性标准溶液应装在聚乙烯瓶中密闭保portant; word-wrap: break-word !important; font-family: 宋体; letter-spacing: -2px; font-size: 14px;">portant; word-wrap: break-word !important;">存 portant; word-wrap: break-word !important; font-size: 13px;">,portant; word-wrap: break-word !important; font-family: 宋体; letter-spacing: 0px; font-size: 14px;">portant; word-wrap: break-word !important;">防止二氧化碳进入标准溶液后形成碳酸 portant; word-wrap: break-word !important; font-size: 13px;">,portant; word-wrap: break-word !important;">降低portant; word-wrap: break-word !important;">其portant; word-wrap: break-word !important; font-size: 13px;">pportant; word-wrap: break-word !important; letter-spacing: -2px; font-size: 13px;"> portant; word-wrap: break-word !important; font-size: 13px;">Hportant; word-wrap: break-word !important; letter-spacing: -1px; font-size: 13px;"> portant; word-wrap: break-word !important;">值。

portant; word-wrap: break-word !important; font-size: 16px;">portant; word-wrap: break-word !important; font-family: 宋体; font-size: 13px;">

portant; word-wrap: break-word !important; font-size: 16px;">portant; word-wrap: break-word !important; font-family: 宋体; font-size: 13px;">①portant; word-wrap: break-word !important; font-size: 13px;">pportant; word-wrap: break-word !important; letter-spacing: -2px; font-size: 13px;"> portant; word-wrap: break-word !important; font-size: 13px;">Hportant; word-wrap: break-word !important; letter-spacing: -1px; font-size: 13px;"> portant; word-wrap: break-word !important; font-family: 宋体; letter-spacing: 0px; font-size: 14px;">portant; word-wrap: break-word !important;">标准物质应保存在干燥的地方 portant; word-wrap: break-word !important; letter-spacing: 1px; font-size: 13px;">,portant; word-wrap: break-word !important;">如混portant; word-wrap: break-word !important;">合磷酸盐portant; word-wrap: break-word !important; font-size: 13px;">pportant; word-wrap: break-word !important; letter-spacing: -2px; font-size: 13px;"> portant; word-wrap: break-word !important; font-size: 13px;">Hportant; word-wrap: break-word !important; letter-spacing: -1px; font-size: 13px;"> portant; word-wrap: break-word !important;">标准物质在空气湿度较大时就会发portant; word-wrap: break-word !important; font-family: 宋体; letter-spacing: -1px; font-size: 14px;">portant; word-wrap: break-word !important;">生潮解 portant; word-wrap: break-word !important; font-size: 13px;">,portant; word-wrap: break-word !important; font-family: 宋体; letter-spacing: -1px; font-size: 14px;">portant; word-wrap: break-word !important;">一旦出现潮解 portant; word-wrap: break-word !important; letter-spacing: 0px; font-size: 13px;">,pportant; word-wrap: break-word !important; letter-spacing: -2px; font-size: 13px;"> portant; word-wrap: break-word !important; font-size: 13px;">Hportant; word-wrap: break-word !important; letter-spacing: -1px; font-size: 13px;"> portant; word-wrap: break-word !important;">标准物质即不可使用。

portant; word-wrap: break-word !important; font-size: 16px;">portant; word-wrap: break-word !important; font-family: 宋体; letter-spacing: -1px; font-size: 14px;">②portant; word-wrap: break-word !important;">配制 portant; word-wrap: break-word !important; font-size: 13px;">pportant; word-wrap: break-word !important; letter-spacing: -2px; font-size: 13px;"> portant; word-wrap: break-word !important; font-size: 13px;">H portant; word-wrap: break-word !important;">标准溶液应使用二次蒸馏水或portant; word-wrap: break-word !important; font-family: 宋体; letter-spacing: 0px; font-size: 14px;">portant; word-wrap: break-word !important;">者是去离子水。如果是用于 portant; word-wrap: break-word !important; letter-spacing: 0px; font-size: 13px;">0portant; word-wrap: break-word !important; letter-spacing: 0px; font-size: 14px;">portant; word-wrap: break-word !important; font-family: 'Palatino Linotype';">.portant; word-wrap: break-word !important; letter-spacing: 0px; font-size: 13px;">1portant; word-wrap: break-word !important; font-size: 13px;"> portant; word-wrap: break-word !important;">级portant; word-wrap: break-word !important; font-size: 13px;">pportant; word-wrap: break-word !important; letter-spacing: -2px; font-size: 13px;"> portant; word-wrap: break-word !important; font-size: 13px;">Hportant; word-wrap: break-word !important; letter-spacing: -1px; font-size: 13px;"> portant; word-wrap: break-word !important; font-family: 宋体; letter-spacing: -1px; font-size: 14px;">portant; word-wrap: break-word !important;">计测量 portant; word-wrap: break-word !important; font-size: 13px;">,portant; word-wrap: break-word !important;">则portant; word-wrap: break-word !important;">可以用普通蒸馏水。

portant; word-wrap: break-word !important; font-size: 16px;">portant; word-wrap: break-word !important; font-family: 宋体; letter-spacing: -1px; font-size: 14px;">③portant; word-wrap: break-word !important;">配制 portant; word-wrap: break-word !important; font-size: 13px;">pportant; word-wrap: break-word !important; letter-spacing: -2px; font-size: 13px;"> portant; word-wrap: break-word !important; font-size: 13px;">H portant; word-wrap: break-word !important;">标准溶液应使用较小的烧杯来portant; word-wrap: break-word !important; font-family: 宋体; letter-spacing: -1px; font-size: 14px;">portant; word-wrap: break-word !important;">稀释 portant; word-wrap: break-word !important; font-size: 13px;">,portant; word-wrap: break-word !important; font-family: 宋体; letter-spacing: 0px; font-size: 14px;">portant; word-wrap: break-word !important;">以减少沾在烧杯壁上的 portant; word-wrap: break-word !important; font-size: 13px;">pportant; word-wrap: break-word !important; letter-spacing: -2px; font-size: 13px;"> portant; word-wrap: break-word !important; font-size: 13px;">Hportant; word-wrap: break-word !important; letter-spacing: 0px; font-size: 13px;"> portant; word-wrap: break-word !important;">标准液。存放portant; word-wrap: break-word !important; letter-spacing: 0px; font-size: 13px;">pportant; word-wrap: break-word !important; letter-spacing: -2px; font-size: 13px;"> portant; word-wrap: break-word !important; font-size: 13px;">Hportant; word-wrap: break-word !important; letter-spacing: -1px; font-size: 13px;"> portant; word-wrap: break-word !important; font-family: 宋体; letter-spacing: 0px; font-size: 14px;">portant; word-wrap: break-word !important;">标准物质的塑料袋或其他容器 portant; word-wrap: break-word !important; letter-spacing: 0px; font-size: 13px;">,portant; word-wrap: break-word !important;">除了应倒干净portant; word-wrap: break-word !important; font-family: 宋体; letter-spacing: -1px; font-size: 14px;">portant; word-wrap: break-word !important;">以外 portant; word-wrap: break-word !important; font-size: 13px;">,portant; word-wrap: break-word !important; font-family: 宋体; letter-spacing: 0px; font-size: 14px;">portant; word-wrap: break-word !important;">还应用蒸馏水多次冲洗 portant; word-wrap: break-word !important; font-size: 13px;">,portant; word-wrap: break-word !important;">然后将其倒入配制portant; word-wrap: break-word !important;">的portant; word-wrap: break-word !important; font-size: 13px;">pportant; word-wrap: break-word !important; letter-spacing: -2px; font-size: 13px;"> portant; word-wrap: break-word !important; font-size: 13px;">Hportant; word-wrap: break-word !important; letter-spacing: -1px; font-size: 13px;"> portant; word-wrap: break-word !important; font-family: 宋体; letter-spacing: -1px; font-size: 14px;">portant; word-wrap: break-word !important;">标准溶液中 portant; word-wrap: break-word !important; font-size: 13px;">,portant; word-wrap: break-word !important;">以保证配制的portant; word-wrap: break-word !important; font-size: 13px;">pportant; word-wrap: break-word !important; letter-spacing: -2px; font-size: 13px;"> portant; word-wrap: break-word !important; font-size: 13px;">Hportant; word-wrap: break-word !important; letter-spacing: -1px; font-size: 13px;"> portant; word-wrap: break-word !important;">标准溶液准portant; word-wrap: break-word !important;">确无误。

portant; word-wrap: break-word !important; font-size: 16px;">portant; word-wrap: break-word !important; font-family: 宋体; letter-spacing: 0px; font-size: 14px;">④portant; word-wrap: break-word !important;">配制好的标准缓冲溶液一般可保存 portant; word-wrap: break-word !important; letter-spacing: 0px; font-size: 13px;">2portant; word-wrap: break-word !important;">～portant; word-wrap: break-word !important; letter-spacing: 0px; font-size: 13px;">3 portant; word-wrap: break-word !important; font-family: 宋体; letter-spacing: -1px; font-size: 14px;">portant; word-wrap: break-word !important;">个月 portant; word-wrap: break-word !important; letter-spacing: 1px; font-size: 13px;">,portant; word-wrap: break-word !important;">如发现有浑浊portant; word-wrap: break-word !important; font-family: 宋体; letter-spacing: -1px; font-size: 14px;">portant; word-wrap: break-word !important;">、发霉或沉淀等现象时 portant; word-wrap: break-word !important; letter-spacing: 1px; font-size: 13px;">,portant; word-wrap: break-word !important;">不能继续使用。

portant; word-wrap: break-word !important; font-size: 16px;">portant; word-wrap: break-word !important; font-family: 宋体; letter-spacing: 0px; font-size: 14px;">⑤portant; word-wrap: break-word !important;">碱性标准溶液应装在聚乙烯瓶中密闭保portant; word-wrap: break-word !important; font-family: 宋体; letter-spacing: -2px; font-size: 14px;">portant; word-wrap: break-word !important;">存 portant; word-wrap: break-word !important; font-size: 13px;">,portant; word-wrap: break-word !important; font-family: 宋体; letter-spacing: 0px; font-size: 14px;">portant; word-wrap: break-word !important;">防止二氧化碳进入标准溶液后形成碳酸 portant; word-wrap: break-word !important; font-size: 13px;">,portant; word-wrap: break-word !important;">降低portant; word-wrap: break-word !important;">其portant; word-wrap: break-word !important; font-size: 13px;">pportant; word-wrap: break-word !important; letter-spacing: -2px; font-size: 13px;"> portant; word-wrap: break-word !important; font-size: 13px;">Hportant; word-wrap: break-word !important; letter-spacing: -1px; font-size: 13px;"> portant; word-wrap: break-word !important;">值。

portant; word-wrap: break-word !important; font-size: 16px;">portant; word-wrap: break-word !important; font-family: 宋体; letter-spacing: 0px; font-size: 14px;">portant; word-wrap: break-word !important;">⑥电极的引出端必须保持清洁和干燥 portant; word-wrap: break-word !important; line-height: 14.9499998092651px; letter-spacing: 1px; font-size: 13px;">,portant; word-wrap: break-word !important; font-family: 宋体; letter-spacing: 0px; font-size: 14px;">portant; word-wrap: break-word !important;">以免降低绝缘性能。应防止输出两端短路 portant; word-wrap: break-word !important; line-height: 14.9499998092651px; font-size: 13px;">,portant; word-wrap: break-word !important; font-family: 宋体; letter-spacing: -1px; font-size: 14px;">portant; word-wrap: break-word !important;">否则 portant; word-wrap: break-word !important; line-height: 14.9499998092651px; font-size: 13px;">,portant; word-wrap: break-word !important;">会造成portant; word-wrap: break-word !important; line-height: 14.9499998092651px; font-size: 13px;">p H portant; word-wrap: break-word !important;">计测量失准或测量失败。

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portant; word-wrap: break-word !important;">⑧电极在测定碱性溶液和测量浓度较大的溶液portant; word-wrap: break-word !important;">portant; word-wrap: break-word !important; font-size: 16px;">时 portant; word-wrap: break-word !important;">,portant; word-wrap: break-word !important;">portant; word-wrap: break-word !important; font-size: 16px;">尽量缩短测量时间 portant; word-wrap: break-word !important;">,portant; word-wrap: break-word !important;">portant; word-wrap: break-word !important; font-size: 16px;">用后仔细清洗 portant; word-wrap: break-word !important;">,portant; word-wrap: break-word !important;">防止待测液粘附在电极上而污染电极。

portant; word-wrap: break-word !important; line-height: 19.7199993133545px; letter-spacing: 0.05pt; font-family: 宋体;">⑨一般不应用玻璃电极测强碱性溶液portant; word-wrap: break-word !important; line-height: 15.4666662216187px; letter-spacing: 0.15pt; font-size: 10pt; top: -0.5pt;">(portant; word-wrap: break-word !important; line-height: 15.4666662216187px; letter-spacing: 0.15pt; font-size: 10pt;">p portant; word-wrap: break-word !important; line-height: 15.4666662216187px; font-size: 10pt;">Hportant; word-wrap: break-word !important; line-height: 15.4666662216187px; letter-spacing: -0.15pt; font-size: 10pt;"> = portant; word-wrap: break-word !important; line-height: 15.4666662216187px; font-size: 10pt;">11 portant; word-wrap: break-word !important; line-height: 19.7199993133545px; font-family: 宋体;">以上portant; word-wrap: break-word !important; line-height: 15.4666662216187px; letter-spacing: 0.85pt; font-size: 10pt; top: -0.5pt;">) portant; word-wrap: break-word !important; line-height: 15.4666662216187px; font-size: 10pt;">,portant; word-wrap: break-word !important; font-family: 宋体; line-height: 16.2399997711182px; letter-spacing: -0.25pt; font-size: 10.5pt;">portant; word-wrap: break-word !important; font-size: 16px;">如必须测定应尽量快速测 portant; word-wrap: break-word !important; line-height: 15.4666662216187px; font-size: 10pt;">,portant; word-wrap: break-word !important; font-family: 宋体; line-height: 16.2399997711182px; letter-spacing: -0.7pt; font-size: 10.5pt;">portant; word-wrap: break-word !important; font-size: 16px;">使用后 portant; word-wrap: break-word !important; line-height: 15.4666662216187px; font-size: 10pt;">,portant; word-wrap: break-word !important; line-height: 19.7199993133545px; font-family: 宋体;">球部应portant; word-wrap: break-word !important; font-family: 宋体; line-height: 16.2399997711182px; letter-spacing: -1.4pt; font-size: 10.5pt;">portant; word-wrap: break-word !important; font-size: 16px;">以 portant; word-wrap: break-word !important; line-height: 15.4666662216187px; letter-spacing: -0.05pt; font-size: 10pt;">1portant; word-wrap: break-word !important; line-height: 15.4666662216187px; letter-spacing: -1.6pt; font-size: 10pt;">mportant; word-wrap: break-word !important; line-height: 15.4666662216187px; letter-spacing: -0.15pt; font-size: 10pt;">oportant; word-wrap: break-word !important; line-height: 15.4666662216187px; letter-spacing: -0.55pt; font-size: 10pt;">lportant; word-wrap: break-word !important; font-family: 宋体; line-height: 16.2399997711182px; letter-spacing: -4.6pt; font-size: 10.5pt;">/  portant; word-wrap: break-word !important; line-height: 15.4666271209717px; font-size: 13.3333px;">portant; word-wrap: break-word !important; font-family: 'Times New Roman';">Lportant; word-wrap: break-word !important; font-family: 宋体; line-height: 16.2399997711182px; letter-spacing: -0.35pt; font-size: 10.5pt;">portant; word-wrap: break-word !important; font-size: 16px;">盐酸液浸泡片刻 portant; word-wrap: break-word !important; line-height: 15.4666662216187px; letter-spacing: 0.3pt; font-size: 10pt;">,portant; word-wrap: break-word !important; line-height: 19.7199993133545px; letter-spacing: 0.15pt; font-family: 宋体;">再用蒸馏水洗净。电极也不能用于测量强酸或其他腐蚀性溶液。

portant; word-wrap: break-word !important; letter-spacing: 0.25pt; font-family: 宋体;">⑩电极插头上的有机玻璃管有优良的绝缘性portant; word-wrap: break-word !important; font-family: 宋体; letter-spacing: -1.65pt; font-size: 10.5pt;">portant; word-wrap: break-word !important; font-size: 16px;">能 portant; word-wrap: break-word !important; line-height: 15.4666662216187px; font-size: 10pt;">,portant; word-wrap: break-word !important; letter-spacing: 0.1pt; font-family: 宋体;">切忌与脱水性介质如无水乙醇portant; word-wrap: break-word !important; letter-spacing: -1.05pt; font-family: 宋体;">、重铬酸钾等使portant; word-wrap: break-word !important; letter-spacing: -0.7pt; font-family: 宋体;">用或与油污接触。

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portant; word-wrap: break-word !important; letter-spacing: -0.05pt; font-family: 宋体;">被测溶液中如含有易污染敏感球泡或堵塞液portant; word-wrap: break-word !important; font-family: 宋体; letter-spacing: -0.55pt; font-size: 10.5pt;">portant; word-wrap: break-word !important; font-size: 16px;">接界的物质 portant; word-wrap: break-word !important; line-height: 15.4666662216187px; font-size: 10pt;">,portant; word-wrap: break-word !important; font-family: 宋体; letter-spacing: -0.45pt; font-size: 10.5pt;">portant; word-wrap: break-word !important; font-size: 16px;">而使电极钝化 portant; word-wrap: break-word !important; line-height: 15.4666662216187px; font-size: 10pt;">,portant; word-wrap: break-word !important; font-family: 宋体;">其现象是敏感梯度降portant; word-wrap: break-word !important; font-family: 宋体; letter-spacing: -1.3pt; font-size: 10.5pt;">portant; word-wrap: break-word !important; font-size: 16px;">低 portant; word-wrap: break-word !important; line-height: 15.4666662216187px; letter-spacing: -0.2pt; font-size: 10pt;">,portant; word-wrap: break-word !important; font-family: 宋体; letter-spacing: -0.05pt; font-size: 10.5pt;">portant; word-wrap: break-word !important; font-size: 16px;">或读数不准。如此 portant; word-wrap: break-word !important; line-height: 15.4666662216187px; letter-spacing: -0.8pt; font-size: 10pt;">, portant; word-wrap: break-word !important; letter-spacing: 0.5pt; font-family: 宋体;">则应根据污染物质的性portant; word-wrap: break-word !important; font-family: 宋体; letter-spacing: -1.3pt; font-size: 10.5pt;">portant; word-wrap: break-word !important; font-size: 16px;">质 portant; word-wrap: break-word !important; line-height: 15.4666662216187px; font-size: 10pt;">,portant; word-wrap: break-word !important; font-family: 宋体; letter-spacing: -0.35pt; font-size: 10.5pt;">portant; word-wrap: break-word !important; font-size: 16px;">以适当溶液清洗 portant; word-wrap: break-word !important; line-height: 15.4666662216187px; font-size: 10pt;">,portant; word-wrap: break-word !important; letter-spacing: 0.2pt; font-family: 宋体;">使之复新。

portant; word-wrap: break-word !important; font-size: 16px;">portant; word-wrap: break-word !important;">

portant; word-wrap: break-word !important; font-size: 16px;">portant; word-wrap: break-word !important;">注意portant; word-wrap: break-word !important; line-height: 15.4666662216187px; letter-spacing: 0.4pt; font-size: 10pt;">:portant; word-wrap: break-word !important;">选用清洗剂时应避免有污染物的清洗portant; word-wrap: break-word !important; font-family: 宋体; letter-spacing: -1.5pt; font-size: 10.5pt;">portant; word-wrap: break-word !important;">剂 portant; word-wrap: break-word !important; line-height: 15.4666662216187px; font-size: 10pt;">,portant; word-wrap: break-word !important; font-family: 宋体; letter-spacing: -0.2pt; font-size: 10.5pt;">portant; word-wrap: break-word !important;">因为污染物涂在敏感玻璃球泡上 portant; word-wrap: break-word !important; line-height: 15.4666662216187px; font-size: 10pt;">,portant; word-wrap: break-word !important;">会使电极失portant; word-wrap: break-word !important; font-family: 宋体; letter-spacing: -0.3pt; font-size: 10.5pt;">portant; word-wrap: break-word !important;">效。污染物质和清洗参看表 portant; word-wrap: break-word !important; line-height: 15.4666662216187px; font-size: 10pt;">1portant; word-wrap: break-word !important; line-height: 15.4666662216187px; letter-spacing: 0.05pt; font-size: 10pt;"> ,portant; word-wrap: break-word !important;">供参考。

portant; word-wrap: break-word !important; font-size: 16px;">portant; word-wrap: break-word !important; font-family: 宋体; letter-spacing: 0px; font-size: 14px;">portant; word-wrap: break-word !important;">电极经长期使用后 portant; word-wrap: break-word !important; line-height: 15.0799999237061px; font-size: 13px;">,portant; word-wrap: break-word !important; font-family: 宋体; letter-spacing: 0px; font-size: 14px;">portant; word-wrap: break-word !important;">如发现梯度略有降低 portant; word-wrap: break-word !important; line-height: 15.0799999237061px; font-size: 13px;">,portant; word-wrap: break-word !important;">则portant; word-wrap: break-word !important; font-family: 宋体; letter-spacing: -1px; font-size: 14px;">portant; word-wrap: break-word !important;">可把电极下端浸泡在 portant; word-wrap: break-word !important; line-height: 15.0799999237061px; font-size: 13px;">4portant; word-wrap: break-word !important; line-height: 15.0799999237061px; letter-spacing: 0px; font-size: 13px;"> %portant; word-wrap: break-word !important; font-family: 宋体; letter-spacing: -1px; font-size: 14px;">portant; word-wrap: break-word !important;">氢氟酸中 portant; word-wrap: break-word !important; line-height: 15.0799999237061px; letter-spacing: 0px; font-size: 13px;">3portant; word-wrap: break-word !important;">～portant; word-wrap: break-word !important; line-height: 15.0799999237061px; letter-spacing: 0px; font-size: 13px;">5s ,portant; word-wrap: break-word !important;">用蒸馏portant; word-wrap: break-word !important; font-family: 宋体; letter-spacing: -1px; font-size: 14px;">portant; word-wrap: break-word !important;">水洗净 portant; word-wrap: break-word !important; line-height: 15.0799999237061px; font-size: 13px;">,portant; word-wrap: break-word !important; font-family: 宋体; letter-spacing: 0px; font-size: 14px;">portant; word-wrap: break-word !important;">然后在氯化钾溶液中浸泡 portant; word-wrap: break-word !important; line-height: 15.0799999237061px; font-size: 13px;">,portant; word-wrap: break-word !important; font-family: 宋体; letter-spacing: 0px; font-size: 14px;">portant; word-wrap: break-word !important;">使之复新。用氢氟酸浸蚀掉外层胶层 portant; word-wrap: break-word !important; line-height: 15.0799999237061px; letter-spacing: 1px; font-size: 13px;">,portant; word-wrap: break-word !important;">经常能改善电极性能。portant; word-wrap: break-word !important; font-family: 宋体; letter-spacing: 0px; font-size: 14px;">portant; word-wrap: break-word !important;">若能用此法定期清除内外层胶层 portant; word-wrap: break-word !important; line-height: 15.0799999237061px; letter-spacing: 1px; font-size: 13px;">,portant; word-wrap: break-word !important; font-family: 宋体; letter-spacing: 0px; font-size: 14px;">portant; word-wrap: break-word !important;">则电极的寿命几乎是无限的。清洗电极后 portant; word-wrap: break-word !important; line-height: 15.0799999237061px; letter-spacing: 1px; font-size: 13px;">,portant; word-wrap: break-word !important;">不要用滤纸擦试玻portant; word-wrap: break-word !important; font-family: 宋体; letter-spacing: -1px; font-size: 14px;">portant; word-wrap: break-word !important;">璃膜 portant; word-wrap: break-word !important; line-height: 15.0799999237061px; letter-spacing: 1px; font-size: 13px;">,portant; word-wrap: break-word !important; font-family: 宋体; letter-spacing: 0px; font-size: 14px;">portant; word-wrap: break-word !important;">而应用滤纸吸干 portant; word-wrap: break-word !important; line-height: 15.0799999237061px; letter-spacing: 1px; font-size: 13px;">,portant; word-wrap: break-word !important;">避免损坏玻璃薄膜portant; word-wrap: break-word !important; font-family: 宋体; letter-spacing: -3px; font-size: 14px;">portant; word-wrap: break-word !important;">、防止交叉污染 portant; word-wrap: break-word !important; line-height: 15.0799999237061px; font-size: 13px;">,portant; word-wrap: break-word !important;">影响测量精度。然后将电极浸入被测portant; word-wrap: break-word !important; font-family: 宋体; letter-spacing: -1px; font-size: 14px;">portant; word-wrap: break-word !important;">溶液中 portant; word-wrap: break-word !important; line-height: 15.0799999237061px; font-size: 13px;">,portant; word-wrap: break-word !important;">轻轻摇匀。

portant; word-wrap: break-word !important; font-size: 16px;">portant; word-wrap: break-word !important; font-family: 宋体; letter-spacing: -1px; font-size: 14px;">portant; word-wrap: break-word !important;">测量时 portant; word-wrap: break-word !important; line-height: 15.0799999237061px; font-size: 13px;">,portant; word-wrap: break-word !important;">应避免电极的敏感玻璃泡与容器接portant; word-wrap: break-word !important; font-family: 宋体; letter-spacing: -2px; font-size: 14px;">portant; word-wrap: break-word !important;">触 portant; word-wrap: break-word !important; line-height: 15.0799999237061px; font-size: 13px;">,portant; word-wrap: break-word !important; font-family: 宋体; letter-spacing: -1px; font-size: 14px;">portant; word-wrap: break-word !important;">测量后 portant; word-wrap: break-word !important; line-height: 15.0799999237061px; letter-spacing: 1px; font-size: 13px;">,portant; word-wrap: break-word !important; font-family: 宋体; letter-spacing: 0px; font-size: 14px;">portant; word-wrap: break-word !important;">应及时将电极套套上 portant; word-wrap: break-word !important; line-height: 15.0799999237061px; letter-spacing: 1px; font-size: 13px;">,portant; word-wrap: break-word !important;">套内应放少量补充液以保持电极球泡的湿润。

portant; word-wrap: break-word !important; font-size: 16px;">portant; word-wrap: break-word !important; font-family: 宋体; font-size: 14px;">portant; word-wrap: break-word !important;">搬动仪器应将量程选择开关置于“portant; word-wrap: break-word !important; line-height: 15.0799999237061px; font-size: 13px;">0 portant; word-wrap: break-word !important; font-family: 宋体; font-size: 14px;">portant; word-wrap: break-word !important;">位”portant; word-wrap: break-word !important; line-height: 15.0799999237061px; font-size: 13px;">,portant; word-wrap: break-word !important; font-family: 宋体; font-size: 14px;">portant; word-wrap: break-word !important;">此时已将电表断路 portant; word-wrap: break-word !important; line-height: 15.0799999237061px; font-size: 13px;">,portant; word-wrap: break-word !important;">以保证移动时电表的安全。