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TAPPI T 222 : 2002

Superseded
Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

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superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

ACID-INSOLUBLE LIGNIN IN WOOD AND PULP
Available format(s)

Hardcopy , PDF

Superseded date

11-24-2021

Language(s)

English

Published date

08-21-2018

1 Scope
2 Summary of method
3 Significance
4 Definitions
5 Apparatus
6 Reagents
7 Sampling
8 Test specimens
9 Procedure
10 Calculation
11 Report
12 Precision
13 Keywords
14 Additional information
Reference

The carbohydrates in wood and pulp are hydrolyzed and solubilized by sulfuric acid; the acid-insoluble lignin is filtered off, dried, and weighed Specifies a procedure which can be applied to the determination of acid-insoluble lignin in wood and in all grades of unbleached pulps.

DevelopmentNote
Supersedes Tappi 13 (12/2000)
DocumentType
Official Test Method
Pages
5
ProductNote
Reconfirmed 2002
PublisherName
Technical Association of the Pulp & Paper Industry
Status
Superseded
SupersededBy

TAPPI T 236 : 2013 KAPPA NUMBER OF PULP
TAPPI T 204 : 2007 SOLVENT EXTRACTIVES OF WOOD AND PULP
TAPPI T 264 : 2007 PREPARATION OF WOOD FOR CHEMICAL ANALYSIS
TAPPI T 253 : OM 86 HYPO NUMBER OF PULP
TAPPI T 257 : 2014 SAMPLING AND PREPARING WOOD FOR ANALYSIS
TAPPI T 1200 : 2014 INTERLABORATORY EVALUATION OF TEST METHODS TO DETERMINE TAPPI REPEATABILITY AND REPRODUCIBILITY

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