GB/T 38265.3-2022
Test methods for soft soldering fluxes—Part 3:Determination of acid value—Potentiometric and visual titration methods (English Version)

Standard No.: GB/T 38265.3-2022
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 38265.3-2022

Scope: This document specifies the determination methods for the acid value of solder—potentiometric titration and visual titration, including principles, reagents, equipment, test procedures, test data processing, precision, test reports, etc. This document applies to Type 1 and Type 2 solder fluxes defined in GB/T 15829.

GB/T 38265.3-2022 Referenced Document

GB/T 38265.1 Test methods for soft soldering fluxes—Part 1:Determination of non-volatile matter—Gravimetric method
GB/T 38265.2 Test methods for soft soldering fluxes—Part 2: Determination of non-volatile matter—Ebulliometric method
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 6379.4-2006 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 678 Chemical reagent ethanol (absolute ethanol)*， 2023-08-06 Update
GB/T 684 chemical reagent toluene*， 2023-08-06 Update
HG/T 2892 Chemical reagent isopropyl alcohol

2022 GB/T 38265.3-2022 Test methods for soft soldering fluxes—Part 3:Determination of acid value—Potentiometric and visual titration methods