Methods for determination of the drainability of pulp \'Canadian Standard\' freeness method

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

31-05-1982

Publisher

British Standards Institution

National foreword
Cooperating organizations
Method
0. Introduction
1. Scope
2. Field of application
3. Reference
4. Definition
5. Principle
6. Apparatus
7. Preparation of sample
8. Procedure
9. Expression of results
10. Test report
Annexes
A. The "Canadian Standard" freeness tester
B. Maintenance of the "Canadian Standard" freeness
    tester
C. Calibration service
D. Authorized laboratories
E. "Canadian Standard" freeness tester (Table of
    freeness corrections to 0,30% consistency)
F. "Canadian Standard" freeness tester (Table of
    freeness corrections to 20 deg C)
Figures
1. "Canadian Standard" freeness tester
2. Bottom orifice

Specifies a method for measuring the rate at which a dilute pulp suspension may be dewatered, so giving a guide to the amount of mechanical treatment the pulp has received.

This International Standard specifies a method for determination of the drainability of a pulp suspension in water in terms of the “Canadian Standard” freeness (CSF) number.

The “Canadian Standard” freeness test is designed to provide a measure of the rate at which a dilute suspension of pulp may be dewatered. It has been shown that the drainability is related to the surface conditions and swelling of the fibres, and constitutes a useful index of the amount of mechanical treatment to which the pulp has been subjected.

Results of this test do not necessarily correlate with the drainage behaviour of a pulp material on a commercial paper machine.

A method for the determination of drainability in terms of the Schopper-Riegler number is specified in ISO 5267-1.

Committee	PAI/11
DevelopmentNote	Also numbered as ISO 5267-2:1980 Supersedes 78/60851 DC (09/2005)
DocumentType	Standard
Pages	16
PublisherName	British Standards Institution
Status	Current

DEFSTAN 68-205/1(1993) : INTERIM	CHEMICAL WOOD PULP (BLEACHED SULPHATE)
BS 5916(1989) : AMD 7808	SPECIFICATION FOR UNITS FOR EXPRESSING PROPERTIES OF PAPER BOARD AND PULPS

BS 5878:1980	Method for determination of stock concentration of pulps (rapid method)
BS 6035-1:1981	Methods for determination of the drainability of pulp Schopper-Riegler method

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BS 6035-2:1982

Methods for determination of the drainability of pulp \'Canadian Standard\' freeness method

Table of Contents

Abstract

Scope

General Product Information

Standards Referenced By This Book

Standards Referencing This Book

Category

Subcategory