Water quality. Determination of cyclic volatile methylsiloxanes in water - Method using purge and trap with gas chromatography-mass spectrometry (GC-MS)1 Scope This document specifies a method for the quantitative determination of selected cyclic volatile methylsiloxanes (cVMS) in non filtered water samples by purge and trap extraction with isotope dilution gas chromatography mass spectrometry (GC MS). This method is applicable to the determination of individual cVMS, including: octamethylcyclotetrasiloxane (D4); decamethylcyclopentasiloxane (D5); dodecamethylcyclohexasiloxane (D6); in surface water,

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CAUTION BS A 55 grub screws have cadmium as a  plating material which has been restricted and/or banned for use in many countries owing to environmental and health concerns

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BS 4029 mentions that values for the tensile elastic recovery of fibre may vary considerably with the conditions of the test

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This part of ISO 4254

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BS 9295 gives further information on the structural design of buried pipelines under various conditions of loading using the established United Kingdom (UK) method

NOTE: BS 8414-2 does not apply to non-loadbearing external rainscreen over-cladding systems applied to the face of a building