Inspection and Calibration for pH or Conductivity Meters

By: Chihiro NAKAMURA

24 November 2013


It is important for pH meter and Conductivity meter to provide proper operation, inspection and calibration in order to keep high reliability. Various regulation including Japanese Pharmacopoeia (16 revision) is requesting that Standard items such as stability must be confirmed with objective evidence when calibration is made. A digital simulator can inspect main unit and electrode individually. Therefore a digital simulator can inspect whether or not a main unit is working properly. Also we could rapidly found out 15% of electrodes had malfunction when we visited research laboratory in the university. This shows that this method is effective for inspection and calibration.

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