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Petroleum products Transparent and opaque liquids Determination of kinematic viscosity and calculation of dynamic viscosity (ISO 3104:2023). Original standard UNE-EN ISO 3104-2024 in PDF full version. Additional info + preview on request

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Plastics. Determination of melting behaviour (melting temperature or melting range) of semi-crystalline polymers by capillary tube and polarizing-microscope methods. Original standard UNE-EN ISO 3146-2022 in PDF full version. Additional info + preview on request

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Fine ceramics (advanced ceramics, advanced technical ceramics). Methods for chemical analysis of impurities in aluminium oxidepowders using inductively coupled plasma-optical emissionspectrometry. Original standard UNE-EN ISO 3169-2025 in PDF full version. Additional info + preview on request

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Powder metallurgy. Vocabulary. Original standard UNE-EN ISO 3252-2023 in PDF full version. Additional info + preview on request

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Plastic piping systems. Mechanical joints between fittings and pressure pipes - Test method for leaktightness under negative pressure. Original standard UNE-EN ISO 3459-2022 in PDF full version. Additional info + preview on request

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Fasteners Mechanical properties of corrosion-resistant stainless steel fasteners Part 6: General rules for the selection of stainless steels and nickel alloys for fasteners (ISO 3506-6:2020). Original standard UNE-EN ISO 3506-6-2023 in PDF full version. Additional info + preview on request

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