ISO-23772 › Pulps - Kraft liquor - Determination of residual alkali using potentiometric titration

ISO-23772 - 1ST EDITION - CURRENT


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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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Document Number

ISO 23772:2023

Revision Level

1ST EDITION

Status

Current

Publication Date

March 1, 2023

Committee Number

ISO/TC 6