Codes for the representation of names of languages - Alpha-4 code for comprehensive coverage of language variants1 Scope This part of ISO 639 specifies a method for establishing four letter language identifiers (alpha 4) and languagereference names for language variants and a hierarchical framework for relating them to languages, language families and language groups. The alpha 4 language identifiers have been developed for use in a wide range of applications, especially in computer systems, where there is a potential need to cover the entire range of languages,

BS EN 1747-13 specifies a method based on acid digestion and atomic absorption spectrometry for the chemical analysis of lead samples collected on filters from ambient air

are also considered AQEC compliant

Manufacturers of cooking appliances

financial assessment

BS ISOIEC 24734 also includes a suite of test files

This document does not cover web archiving

Contents of BS EN 1760-1:

) which should generally be checked before testing accuracy

Why should you use BS EN 62115:2020

Nor does it apply to table-mounted instruments such as Gullstrand ophthalmoscopes and their derivatives

nickel-chromium

This Part of BS 7371 specifies requirements for organic coatings