This standard establis es the methods and means for the verification of laboratory conductivity meters used to measure the specific electrical conductivity of liquids from 1. 10-7 to 1 S/cm and with a precis on greater than 0 , 5 %.
NC 90-13-30-1985 history
1985NC 90-13-30-1985 Metrological Assurance. Conductometers Verlfícation Methods and Means