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ISO 387:1977

Hydrometers — Principles of construction and adjustment

Publication date:   Sep 1, 1977

General information

90.20   Standard under periodical review   Jul 15, 2026

ISO

ISO/TC 48/SC 4 Density measuring instruments

International Standard

17.060   Measurement of volume, mass, density, viscosity

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Scope

Glass hydrometers of constant mass which do not incorporate a thermometer are considered. Basis of scale, reference temperature, surface tension and reference levels for adjustment and reading are specified. In annex A the standard categories of surface tension are tabled, and annex B deals with the adoption of density as preferred basis of scale.

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PUBLISHED
ISO 387:1977
90.20 Standard under periodical review
Jul 15, 2026