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TAPPI T 244 cm-23:2023

Acid-insoluble ash in wood, pulp, paper, and paperboard

This method describes a procedure for determining the acid-insoluble ash content of cellulose samples. The sample is dry-ashed and the residue treated with hydrochloric acid. The insoluble residue is filtered, washed, ignited, and weighed. This method mea


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Technical Association of the Pulp and Paper Industry [tappi]


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