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ISO 23772:2023

Pulps — Kraft liquor — Determination of residual alkali using potentiometric titration ISO 23772:2023

Publication date:   Mar 10, 2023

General information

60.60 Standard published   Mar 10, 2023

ISO

ISO/TC 6 Paper, board and pulps

International Standard

85.040   Pulps

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Scope

This document describes a procedure for determining the content of residual alkali in Kraft black liquors having a dry matter content up to 40 %.
The method is based on a potentiometric titration with hydrochloric acid and is intended for black liquor samples with an initial pH ≥ 11,0.
The lower limit of determination is 0,1 g/l of eq. NaOH.

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PUBLISHED
ISO 23772:2023
60.60 Standard published
Mar 10, 2023