Natural gas. Measurement of properties. Calorific value and Wobbe index1 Scope This International Standard concerns the measurement of calorific value of natural gas and natural gas substitutes by non separative methods, i. e. methods that do not involve the determination of the gas composition nor calculation from it. It describes the principles of operation of a variety of instruments in use for this purpose, and provides guidelines for the selection, evaluation, performance assessment, installation and operation of

which should be read in conjunction with this Part

Who is BS EN 62330-3 - Helical-scan digital video cassette recording system for

— two-wheeled motorcycles

ISO 3951‑1 is indexed in terms of the acceptance quality limit (AQL) and is designed for users who have simple requirements

Extended Internet services

This International Standard does not address the phytosanitation and safety problems

Scope of BS 5839-6

see Clause 8 and Annex B

flaking and heating

Lightning protection

BS EN 1337-6 on structural rocker bearings is useful for:

Defence and High Performance (ADHP) electronics may inadvertently introduce Pb -free elements (including piece part finish