Standard: TAPPI T 244

ACID-INSOLUBLE ASH IN WOOD, PULP, PAPER, AND PAPERBOARD

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Scope:

Scope and summary

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 measures all acid insoluble material. It is a faster and less accurate method than other referenced methods. For a more accurate but time-consuming wet-ash procedure for determining the silicates and silica content of pulp, see TAPPI T 245 "Silicates and Silica in Pulp (Wet Ash Method)."

 

Organization: TAPPI
Document Number: tappi t 244
Publish Date: 2011-01-01
Page Count: 3
Available Languages: EN
DOD Adopted: NO
ANSI Approved: NO
Most Recent Revision: YES
Current Version: YES
Status: Active
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