Surface active agents. Determination of free propylene oxide content in propylene oxide adduct surfactants. GC method1 Scope This document specifies an analytical procedure for the determination of free propylene oxide in surfactants which are synthesized from propylene oxide copolymers. The method is appropriate for the qualitative and quantitative determination of propylene oxide groups in propylene oxide adducts, polyethers and polyglycol esters by headspace gas chromatography (HS GC) with a flame ionization detector (FID) based on external procedure. Gas

BS EN 1537 on the ground anchors is useful for:

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BS EN 15923 method is applicable to all the straight and compound phosphate fertilizers

Design validation grade V3 and quality grade Q3 represent equipment designed and manufactured consistent with minimum industry practice

See page 4 for details

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cabins) are not covered by ISO 20332

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Level 2: BS EN ISO21534 - Particular requirements for families of non-active surgical implants

NOTE 4 EN 13463-1 gives requirements for non-electrical equipment for potentially explosive atmospheres