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Chemical analysis of refractories containing alumina, zirconia and silica. Refractories containing 5 percent to 45 percent of ZrO2 (alternative to the X-ray fluorescence method). Apparatus, reagents and dissolution. Original standard BS EN ISO 21079-1-2008 in PDF full version. Additional info + preview on request

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Chemical analysis of refractories containing alumina, zirconia, and silica. Refractories containing 5 percent to 45 percent of ZrO2 (alternative to the X-ray fluorescence method). Wet chemical analysis. Original standard BS EN ISO 21079-2-2008 in PDF full version. Additional info + preview on request

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Chemical analysis of refractories containing alumina, zirconia, and silica. Refractories containing 5 percent to 45 percent of ZrO2 (alternative to the X-ray fluorescence method). Flame atomic absorption spectrophotometry (FAAS) and inductively coupled plasma emission spectrometry (ICP-AES). Original standard BS EN ISO 21079-3-2008 in PDF full version. Additional info + preview on request

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Test method to measure the efficiency of air filtration media against spherical nanomaterials. Size range from 20 nm to 500 nm. Original standard BS EN ISO 21083-1-2018 in PDF full version. Additional info + preview on request

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Textiles. Method for determination of alkylphenols (AP). Original standard BS EN ISO 21084-2019 in PDF full version. Additional info + preview on request

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Health Informatics. Harmonized data types for information interchange. Original standard BS EN ISO 21090-2011 in PDF full version. Additional info + preview on request

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