GB/T 1545-2008 "Paper, board and pulps – Determination of acidity or alkalinity of aqueous extracts" specifies the method for determining the acidity or alkalinity of aqueous extracts from paper, board, and pulps, applicable to all types of paper, board, and pulps. The method involves hot water extraction of soluble acidic or alkaline substances from the sample, followed by potentiometric titration or indicator titration to determine acidity (expressed as H⁺ concentration) or alkalinity (expressed as OH⁻ concentration). It clarifies extraction conditions, titration procedures, and result calculation requirements, providing a basis for evaluating the acid-base properties and safety in use of the materials.
This summary is not the original standard text and is for reference only. For accurate information, please obtain it through official channels.
| Status | Active | ||
|---|---|---|---|
| CCS | Y30 | ICS | 85.010 |
| Release Date | 2008-08-19 00:00:00 | Implementation Date | 2009-05-01 00:00:00 |
