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Water quality. Determination of the growth inhibition effects of waste waters, natural waters and chemicals on the duckweed Spirodela polyrhiza. Method using a stock culture independent microbiotest. Original standard BS EN ISO 20227-2017 in PDF full version. Additional info + preview on request

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Water quality. Determination of total organic carbon (TOC), dissolved organic carbon (DOC), total bound nitrogen (TNb) and dissolved bound nitrogen (DNb) after high temperature catalytic oxidative combustion. Original standard BS EN ISO 20236-2024 in PDF full version. Additional info + preview on request

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Conveyor belts. Drum friction testing. Original standard BS EN ISO 20238-2019 in PDF full version. Additional info + preview on request

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Installation and equipment for liquefied natural gas. Design of floating LNG installations. General requirements. Original standard BS EN ISO 20257-1-2020 in PDF full version. Additional info + preview on request

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Installation and equipment for liquefied natural gas. Design of floating LNG installations. Specific FSRU issues. Original standard BS EN ISO 20257-2-2021 in PDF full version. Additional info + preview on request

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Paints and varnishes. Determination of image clarity (degree of sharpness of reflected or transmitted image). Original standard BS EN ISO 20266-2020 in PDF full version. Additional info + preview on request

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