Iron ores. Guidelines for the use of certified reference materials (CRMs)1 Scope This International Standard describes recommended procedures for the use of CRMs that have been prepared and certified in accordance with ISO 11459. Such CRMs are used by laboratories to carry out the trueness tests as specified in the various International Standards for the chemical analysis of iron ores, to verify the analysis of shipment samples and the ongoing reliability of analytical results.

The hydroelectric industry

– rated voltage to earth does not exceed 300 V a

The washers are primarily for use with B

Resistance to environmental influences

and economy

BS EN ISO 14907-1:2020 supersedes PD CEN ISO/TS 14907-1:2015

BS EN ISO 12947-2:2016 supersedes BS EN ISO 12947-2:1998 which has been withdrawn

BS 5305 on cleaning and disinfecting in the dairying industry applies to:

c) information technologies

This European Standard is not applicable to playground equipment as defined in EN 1176‑1

This document specifies type test methods for the assessment of safety and performance of fume cupboards connected to an exhaust air system

5 Tightness of the air delivery and filtration system