ISO 7884-1:1987

Glass — Viscosity and viscometric fixed points — Part 1: Principles for determining viscosity and viscometric fixed points

Publication date: Nov 26, 1987

General information

Current stage: 90.93 Effective date: Dec 13, 2019

Originator: ISO

Owner: ISO/TC 48

Type: International Standard

ICS: 81.040.01

Languages: English

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Status: Published

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Scope

Rules a given characterizing glass as a liquid (or liquid-analogue deformable) material. Three ranges of viscosity can be distinguished: melting, working and annealing range. General requirements for measurement and calibration, for apparatus and for sampling are specified. The formulae for calculating the different values are described. In annex A tables for estimating the influence of errors in viscosity and temperature determination and in annex B examples of certified reference glasses are shown.

Life cycle

NOW

PUBLISHED
ISO 7884-1:1987
90.93 Standard confirmed
Dec 13, 2019

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