JIS K5101-17-1-2004 "Pigment Test Methods, Part 17: PH Value. Section 1 Thermal Extraction Method", which regulates the technical process for determining the pH value of pigments by thermal extraction. The standard specifies the temperature, time and other conditions of thermal extraction, as well as the specific operation steps of sample preparation and pH measurement of the extraction solution. At the same time, data processing and result determination methods are given, which provide a unified standard for scientific determination of pigment acid alkalinity under thermal extraction conditions, and ensure the accuracy and standardization of pigment quality detection.
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