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Health and safety in welding and allied processes. Requirements, testing and marking of equipment for air filtration. Determination of the capture efficiency of on-torch welding fume extraction devices. Original standard BS EN ISO 21904-3-2018 in PDF full version. Additional info + preview on request

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Health and safety in welding and allied processes. Equipment for capture and separation of welding fume. Determination of the minimum air volume flow rate of capture devices. Original standard BS EN ISO 21904-4-2020 in PDF full version. Additional info + preview on request

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Passive neutron dosimetry systems. Performance and test requirements for personal dosimetry. Original standard BS EN ISO 21909-1-2023 in PDF full version. Additional info + preview on request

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Passive neutron dosimetry systems. Methodology and criteria for the qualification of personal dosimetry systems in workplaces. Original standard BS EN ISO 21909-2-2023 in PDF full version. Additional info + preview on request

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Solid recovered fuels. Determination of self-heating. Isothermal calorimetry. Original standard BS EN ISO 21911-1-2023 in PDF full version. Additional info + preview on request

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Solid recovered fuels. Safe handling and storage of solid recovered fuels. Original standard BS EN ISO 21912-2021 in PDF full version. Additional info + preview on request

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