BS 7034-1:1988

National foreword
Committees responsible
Recommendations
0 Introduction
1 Scope and field of application
2 Reference
3 Definitions
4 Viscosity-temperature relationships
5 Principles of measurement and calibration
6 Apparatus
7 Glass under test
8 Test report
Annexes
A Tables for estimating the influence of errors in
   viscosity or temperature determination
B Examples of certified reference glasses for
   viscometric calibration
C Bibliography
Tables
1 Relative change (delta eta)/eta and delta log eta in
   the viscosity corresponding to a change in
   temperature of - 1 deg C
2 Influence on error introduced by rounding constants
   A, B and C
3 Certified reference glasses for glass viscosity
4 Certified reference glasses for glass viscometric
   fixed points

Gives rules for characterizing glass as a liquid material with respect to its dynamic viscosity and viscosity-temperature relationship, if it behaves as a Newtonian fluid. Covers references, definitions, viscosity-temperature relationship, principles of measurement and calibration, apparatus, glass under test and test report.

This part of ISO 7884 gives rules for characterizing glass as a liquid (or liquid-analogue deformable) material with respect to its dynamic viscosity η and viscosity-temperature relationship, if it behaves as a Newtonian fluid.

NOTE Non-Newtonian behaviour may be observed sometimes in opaque glasses, vitreous enamels or highly crystallizing glasses (glass ceramics).