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BS 7485:1991

Superseded

Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

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Method of specifying aqueous dispersions of polytetrafluoroethylene (PTFE) materials

Available format(s)

Hardcopy , PDF

Superseded date

15-04-1996

Language(s)

English

Published date

31-01-1992

€231.38
Excluding VAT

Committees responsible
Foreword
Method
0. Introduction
1. Scope
2. Definitions
3. Designation
4. Properties and tolerances
Appendices
A. Method for the determination of the polytetra-
     fluoroethylene and surfactant contents of aqueous
     dispersions of polytetrafluoroethylene materials
B. Method for the determination of the density of
     aqueous dispersions of polytetrafluoroethylene
     materials
C. Method for the determination of the pH of aqueous
     dispersions of polytetrafluoroethylene materials
D. Method for the determination of the viscosity of
     aqueous dispersions of polytetrafluoroethylene
     materials
E. Information to be declared with the product
Tables

1. Minimum requirements
2. Additional properties

Describes for the first time a system of specifying aqueous polytetrafluoroethylene dispersions.

Committee
PRI/82
DocumentType
Standard
Pages
12
PublisherName
British Standards Institution
Status
Superseded
SupersededBy

ISO 2555:1989 Plastics Resins in the liquid state or as emulsions or dispersions Determination of apparent viscosity by the Brookfield Test method
ISO 1148:1980 Plastics — Aqueous dispersions of polymers and copolymers — Determination of pH
BS 2782-7 Method 730B:1978 Methods of testing plastics. Rheological properties Determination of the viscosity of polymers in the liquid, emulsified or dispersed state using a rotational viscometer working at a defined shear rate
BS 1647-2:1984 pH measurement Specification for reference value standard solutions and operational reference standard solutions

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