Paints and varnishes. Determination of pH value - pH electrodes with ISFET technology1 Scope This document specifies a method for measuring the pH value of dispersions and coating materials using pH electrodes with ion sensitive field effect transistor (ISFET) technology. ISO 193961 specifies a method for measuring the pH value using pH electrodes with a glass membrane.

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they are designed for use by uninstructed people and for not being maintained

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What is BS 4591- Distillation characteristics of organic liquids about

and allowing interchangeable fitting in carrying cases

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