Specification for density hydrometers

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

31-05-1991

Publisher

British Standards Institution

Five series of hydrometers for liquids with densities between 600 and 2000 kg/m³ at 20°C and three sub-series for petroleum products for densities between 600 and 1100 kg/m³ at 15°C. Materials, permitted errors, corrections for surface tension, temperature and meniscus, guide to purchasers, method of use, density of water from 0°C to 40°C, vessels for hydrometer observation.

Committee	LBI/1/2
DevelopmentNote	Supersedes 90/54510 DC and BS 718(1979) (09/2005) Reviewed and confirmed by BSI, October 2012. (09/2012)
DocumentType	Standard
Pages	26
PublisherName	British Standards Institution
Status	Current
Supersedes	BS 718:1979

This British Standard specifies requirements for five basic series of glass hydrometers of constant mass which are graduated to indicate density (kg/m³ or g/ml) when used at 20 °C.

Each series comprises hydrometers which between them cover the interval 600 kg/m³ to 2 000 kg/m³ (0.6 g/ml to 2.0 g/ml). The hydrometers are graduated appropriately for use in liquids of low, medium or high surface tension.

The standard also specifies three sub-series of hydrometers which are graduated either to indicate density when used at 15 °C or to indicate density when used at 20 °C. They have smaller tolerances on scale error, are limited to the range 600 kg/m³ to 1 100 kg/m³ (0.6 g/ml to 1.1 g/ml) and are for use in liquids of low surface tension.

A single hydrometer principally suitable for the measurement of the density of petroleum fuels is included.

This British Standard does not cover hydrometers with a built-in thermometer (thermohydrometers).

ISO 1768:1975	Glass hydrometers — Conventional value for the thermal cubic expansion coefficient (for use in the preparation of measurement tables for liquids)
ISO 91:2017	Petroleum and related products — Temperature and pressure volume correction factors (petroleum measurement tables) and standard reference conditions
BS 604:1982	Specification for graduated glass measuring cylinders
ISO 3675:1998	Crude petroleum and liquid petroleum products Laboratory determination of density Hydrometer method
BS 6441:1983	Schedule for petroleum measurement tables
BS 733-2:1987	Pyknometers Methods for calibration and use of pyknometers
BS 4714:1980	Method for laboratory determination of density or relative density of crude petroleum and liquid petroleum products (hydrometer method)
ISO 650:1977	Relative density 60/60 degrees F hydrometers for general purposes

View more information

€216.35

Excluding VAT

Product format

I agree to the DRM document license rules apply against the PDF selection made.

Please confirm that you agree to the document license rules for this document.

I agree to the document license rules .

Please confirm that you agree to the document license rules for this document.

Access your standards online with a subscription

Features

Simple online access to standards, technical information and regulations.
Critical updates of standards and customisable alerts and notifications.
Multi-user online standards collection: secure, flexible and cost effective.

Get in touch with us

BS 718:1991

Specification for density hydrometers

Abstract

General Product Information

Scope

Standards Referencing This Book

Category

Subcategory