ISO/NP 23525

Revision of ISO 649-2:1981Laboratory glassware — Density hydrometers for general purposes — Part 2: Test methods and use

Scope

The guidance document provides the test methods and use of density hydrometers for general purposes. This includes Apparatus、Preliminaries、Reading the hydrometer、Reading of temperature、Application of the corrections 、Meniscus corrections and Density of air-free distilled water.