Specification for chart ranges for temperature recording instruments

it gives recommendations and explanatory guidance for in situ leak testing of high-efficiency filters using an oil aerosol challenge and photometer

non-transit-operable

Number of escape stairs

This British Standard is a revision of BS 4428:1969

Independent freestanding hotplates

and tables used in electrotechnology

ISO 2808 consistently enumerates the individual coatings applied in a multi-layer system by referring to the first coating applied on the substrate as coating 1

optical class

It specifies the basic requirements referred to in the other parts of the standard as follows:

5 has been modified to state that ‘the canvas shall be a woven fabric whose warp and weft are spun yarns from open end fibres’

BS EN ISO 10320:2019 supersedes ISO 10320:1999 which has been withdrawn

Welding Procedure Specification (WPS)