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Blockchain and distributed ledger technologies. Vocabulary. Original standard UNE-EN ISO 22739-2025 in PDF full version. Additional info + preview on request

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Liquid petroleum products. Determination of hydrocarbon types and oxygenates in automotive-motor gasoline and in ethanol (E85) automotive fuel. Multidimensional gas chromatography method. Original standard UNE-EN ISO 22854-2025 in PDF full version. Additional info + preview on request

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Water quality. Radium 226 and Radium 228. Test method using liquid scintillation counting. Original standard UNE-EN ISO 22908-2020 in PDF full version. Additional info + preview on request

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Amendment 1 - Cryogenic vessels. Cleanliness for cryogenic service. Original standard UNE-EN ISO 23208-2020 A1-2021 in PDF full version. Additional info + preview on request

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Preparation and quality management of fluids for haemodialysis and related therapies - Water for haemodialysis and related therapies. Original standard UNE-EN ISO 23500-3-2024 in PDF full version. Additional info + preview on request

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Measurement of radioactivity - Alpha emitting radionuclides - Generic test method using alpha spectrometry. Original standard UNE-EN ISO 23548-2025 in PDF full version. Additional info + preview on request

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