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Milk and milk products. Determination of nitrate content. Method by enzymatic reduction and molecular- absorption spectrometry after Griess reaction. Original standard BS EN ISO 20541-2008 in PDF full version. Additional info + preview on request

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Radiation protection. Monitoring of workers occupationally exposed to a risk of internal contamination with radioactive material. Original standard BS EN ISO 20553-2025 in PDF full version. Additional info + preview on request

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Plastics. Poly(phenylene ether) (PPE) moulding and extrusion materials. Designation system and basis for specifications. Original standard BS EN ISO 20557-1-2018 in PDF full version. Additional info + preview on request

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Plastics. Poly(phenylene ether) (PPE) moulding and extrusion materials. Preparation of test specimen and determination of properties. Original standard BS EN ISO 20557-2-2018 in PDF full version. Additional info + preview on request

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Plastics. Poly(phenylene sulfide) (PPS) moulding and extrusion materials. Designation system and basis for specifications. Original standard BS EN ISO 20558-1-2019 in PDF full version. Additional info + preview on request

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Plastics. Poly(phenylene sulfide) (PPS) moulding and extrusion materials. Preparation of test specimen and determination of properties. Original standard BS EN ISO 20558-2-2019 in PDF full version. Additional info + preview on request

Document status: Active