Gives guidance on the selection of the appropriate group or sub-group of electrical apparatus, protected by flameproof enclosure or designed to be intrinsically safe, according to the gas or vapour in which it is intended to be used. Provides a classification of most used gases and vapours and gives guidance on tests to classify additional gases or vapours not listed in this publication. This publication has the status of a technical report. This title may contain less than 24 pages of technical content.

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