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Solid recovered fuels. Methods for the determination of carbon (C), hydrogen (H), nitrogen (N) and sulphur (S) by the instrumental method. Original standard BS EN ISO 21663-2020 in PDF full version. Additional info + preview on request

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Fasteners. Hexagon weld nuts with flange. Original standard BS EN ISO 21670-2014 in PDF full version. Additional info + preview on request

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Dentistry. Rotary polishers. Original standard BS EN ISO 21671-2006 + A1-2011 in PDF full version. Additional info + preview on request

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Dentistry. Periodontal probes. General requirements. Original standard BS EN ISO 21672-1-2012 in PDF full version. Additional info + preview on request

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Dentistry. Periodontal probes. Designation. Original standard BS EN ISO 21672-2-2012 (2013) in PDF full version. Additional info + preview on request

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Water quality. Determination of the dissolved fraction of selected active pharmaceutical ingredients, transformation products and other organic substances in water and treated waste water. Method using high performance liquid chromatography and mass spectrometric detection (HPLC-MS/MS or -HRMS) after direct injection. Original standard BS EN ISO 21676-2021 in PDF full version. Additional info + preview on request

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