Water quality. Determination of polycyclic aromatic hydrocarbons (PAH) - Determination of six PAH by high performance thin layer chromatography with fluorescence detection after liquid-liquid extraction1 Scope This part of ISO 7981 specifies the determination of six selected PAH in drinking water by high performance thin layer chromatography with fluorescence detection after liquid liquid extraction. The six PAH are: fluoranthene, benzo[b]fluoranthene, benzo[a]pyrene, benzo[k]fluoranthene, indeno[1,2,3 cd]pyrene, and benzo[ghi]perylene (see Table 1). A screening method (method A) is described to exclude those samples containing less than 20 % of the

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6 Requirements for the emulsion and backing layers of processed film

Annex D (normative) Selection of meter box samples and test plaques for testing

and properties of concrete mixes

consideration of both economic and practical factors

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For consumers the standard provides a guide to the processes to be following

PAS 79 gives guidance

IC payment cards are subject to the requirements identified in this part of ISO 13491 up until the time of issue

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The methods are not suitable for materials that exhibit high set

BS ISO 17593 applies to oral-anticoagulation monitoring systems to be used by lay persons