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TAPPI T 625

2014 Edition, January 1, 1985

Complete Document

Analysis of Soda and Sulfate Black Liquor

Includes all amendments and changes through Reinstatement Notice , 2014


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Description / Abstract:

Scope and summary

This method is for the black or spent liquor separated from the pulp cooked by the soda or sulfate process1. The black liquor sampled for analysis is usually dilute liquor consisting of the combined liquor from the blow pits, diffusers, and washers.

1 Corrections have been made in the calculations for active alkali, NaOH, and CaO.