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ISO 23772:2023

Pulps — Kraft liquor — Determination of residual alkali using potentiometric titration

General information
Valid from 10.03.2023
ICS Groups
85.040 Pulps
Directives or regulations
None

Standard history

Status
Date
Type
Name
10.03.2023
Main
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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Standard monitoring