BS 7485:1991
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
View Superseded by
Method of specifying aqueous dispersions of polytetrafluoroethylene (PTFE) materials
Hardcopy , PDF
English
31-01-1992
15-04-1996
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Superseded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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