ISO 23772:2023
International Standard
Current Edition
·
Approved on
10 March 2023
Pulps — Kraft liquor — Determination of residual alkali using potentiometric titration
ISO 23772:2023 Files
English
7 Pages
Current Edition
BHD
31.0
ISO 23772:2023 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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