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Ambient air quality. Standard method for measurement of benzene concentrations. Diffusive sampling followed by solvent desorption and gas chromatography. Original standard BS EN 14662-5-2005 (2010) in PDF full version. Additional info + preview on request

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Foodstuffs. Determination of vitamin B6 (including its glycosylated forms) by HPLC. Original standard BS EN 14663-2005 (2006) in PDF full version. Additional info + preview on request

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Chemicals used for treatment of water intended for human consumption. Iron (III) sulfate, solid. Original standard BS EN 14664-2023 in PDF full version. Additional info + preview on request

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Surface active agents. Determination of tetraacetyl ethylene diamine (TAED) content in TAED granules. Gas chromatographic method. Original standard BS EN 14666-2005 in PDF full version. Additional info + preview on request

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Surface active agents. Determination of low boiling solvents in liquid formulations. Gas chromatographic method. Original standard BS EN 14667-2005 in PDF full version. Additional info + preview on request

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Surface active agents. Determination of quaternary ammonium surface active agents in raw materials and formulated products. Potentiometric two-phase titration method. Original standard BS EN 14668-2005 (2006) in PDF full version. Additional info + preview on request

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