GB/T 41633.2-2022 (English Version) PDF

Standard No.: GB/T 41633.2-2022
Language: Chinese, Available in English version
Release Date: 2022
Published By: General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
Latest: GB/T 41633.2-2022

Scope: This document describes the method and procedure for the determination of the acid value of insulating liquids by colorimetric titration. This document applies to both unused and used electrical insulating fluids. NOTE: In unused and used insulating liquids, acidic components include organic acids, phenolic compounds, oxidation products, resins, metal organic salts and additives.

GB/T 41633.2-2022 Referenced Document

GB/T 41146 Method of sampling insulating liquids
GB/T 6379.2-2004 Accuracy(trueness and precision)of measurement methods and results-Part 2:Basic method for the determination of repeatability and reproducibility of a standard measurement method
GB/T 6379.3-2012 Accuracy(trueness and precision) of measurement methods and results.Part 3:Intermediate measures of the precision of a standard measurement method
GB/T 6379.4-2006 Accuracy(trueness and precision) of measurement methods and results-Part 4:Basic methods for the determination of the trueness of a standard measurement method
GB/T 6379.5-2006 Accuracy (trueness and precision)of measurement methods and results-Part 5:alternative methods for the determination of the precision of a standard measurement method
GB/T 6379.6-2009 Accuracy(trueness and precision)of measurement methods and results.Part 6:Use in practice of accuracy values
GB/T 6682 Water for analytical laboratory use.Specification and test methods
ISO 6619 Petroleum products and lubricants; neutralization number; potentiometric titration method

2022 GB/T 41633.2-2022 Insulating liquids—Determination of acidity—Part 2: Colourimetric titration