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Carbonate and silicate liming materials. Determination of reactivity. Potentiometric titration method with hydrochloric acid. Original standard UNE-EN 13971-2021 in PDF full version. Additional info + preview on request

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Postal services. Quality of service. Complaints handling principles. Original standard UNE-EN 14012-2021 in PDF full version. Additional info + preview on request

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Fat and oil derivatives. Fatty Acid Methyl Esters (FAME). Determination of oxidation stability (accelerated oxidation test). Original standard UNE-EN 14112-2021 in PDF full version. Additional info + preview on request

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LPG Equipment and accessories. Pressure relief valves for LPG pressure vessels. Original standard UNE-EN 14129-2025 in PDF full version. Additional info + preview on request

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Amendment 1 - Gas safety shut-off devices for inlet pressure up to 10 MPa (100 bar). Original standard UNE-EN 14382-2021 + A1-2025 in PDF full version. Additional info + preview on request

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Respiratory protective devices. Gas filter(s) and combined filter(s). Requirements, testing, marking. Original standard UNE-EN 14387-2022 in PDF full version. Additional info + preview on request

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