法規(guī)原文:Meter calibration is accomplished by replacing the conductivity cell with NIST traceable precision resistors (accurate to 0.1% of the stated value) to give a predicted instrument response. “Excluding cell accuracy, instrument accuracy must be 0.1 μS/cm”. Accuracy of the temperature measurement must be ± 2°.儀器的校準(zhǔn)是通過使用可追溯至NIST(誤差 0.1%)電阻來校準(zhǔn)電導(dǎo)率儀,校準(zhǔn)后的誤差需控制在 0.1 μS/cm. 溫度誤差±2°C. 解決方案:0.1% NIST traceable resistors Merck  kit available to check each scale of the meter part as requested. Merck  Field Calibration and Suitability Protocols require more stringent specifications.默克使用可追溯至NIST精度為0.1%的電阻器進(jìn)行校準(zhǔn),提供的校準(zhǔn)和適用性測(cè)試服務(wù)完全滿足相關(guān)參數(shù).   法規(guī)原文:If the cell is changed/replaced for this specific application, calibration of the new cell is required. 如果新的電導(dǎo)率儀更換,需要重新校準(zhǔn) 解決方案:Merck  developed a Field Calibration Protocols. 默克提供專業(yè)校正及校正文本. 法規(guī)原文:These different steps must be followed in this order to perform the USP 645 Test.整個(gè)校正服務(wù)必須遵循USP 645 性能測(cè)試 解決方案: 1.Merck  standard cell replaced by Merck USP cell (if performed for the first time). 2.Calibration of the Merck  conductivity measuring instrument using the field Merck  field calibration protocol. 3.Performance of the USP 645 test using the Merck USP 645 protocol. USP 645 使用的校正文本是基于默克提供的專業(yè)電導(dǎo)率校正服務(wù)及其文本. 2.其它參考法規(guī)如EP,FDA,ISO3696,ASTM?等
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