Water quality. Toxicity test for assessing the inhibition of nitrification of activated sludge microorganisms1 Scope This International Standard specifies a method for assessing the short term inhibitory effect of waters, waste waters or test substances on nitrifying bacteria in activated sludge. The inhibitory effect is estimated over an exposure period of usually 3 h or up to 24 h with weakly nitrifying sludge. The method is applicable to nitrifying activated sludge derived from domestic and synthetic sewage and also to sludges from industrial and mixed

BS 5402 is a standard that outlines the materials

Builders / real estate developers / architects

which may also be accreditation bodies

BS EN 1559-4

With obedience and compliance to BS 2891

This British Standard specifies requirements for castors having diameters from 63 mm to 250 mm intended for use on items of hospital equipment used for the transport of patients

Why should you use BS EN 13544-3 - Air entrainment devices

2 - Titanium (III) chloride reduction methods for the determination of total iron content for

they are determined in accordance with the test methods specified in ISO 21301-2

in hairdressers

BS 6462 specifies tests for the mechanical performance of casement stays and fasteners

Achievement of risk reduction objectives