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.
Status: PublishedPublication date: 2023-03
Edition: 1Number of pages: 7
Technical Committee: ISO/TC 6 Paper, board and pulps
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