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Steel and cast iron. Determination of copper. 2,2'-Biquinoline spectrophotometric method. Original standard UNE-EN ISO 4946-2016 in PDF full version. Additional info + preview on request

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Connections for fluid power and general use. Ports and stud ends with ISO 261 metric threads and O-ring sealing - Dimensions, design, test methods and requirements for external hex and internal hex port plugs. Original standard UNE-EN ISO 6149-4-2017 in PDF full version. Additional info + preview on request

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Animal and vegetable fats and oils. Determination of anisidine value. Original standard UNE-EN ISO 6885-2016 in PDF full version. Additional info + preview on request

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Animal and vegetable fats and oils. Determination of oxidative stability (accelerated oxidation test). Original standard UNE-EN ISO 6886-2016 in PDF full version. Additional info + preview on request

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Amendment 1 - Microbiology of the food chain - Preparation of test samples, initial suspension and decimal dilutions for microbiological examination - Part 1- General rules for the preparation of the initial suspension and decimal dilutions - Amendment 1- Requirements and guidance on the use of a larger test portion size for qualitative methods. Original standard UNE-EN ISO 6887-1-2017 A1-2025 in PDF full version. Additional info + preview on request

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Amendment 1 - Acoustics - Requirements for the performance and calibration of reference sound sources used for the determination of sound power levels. Original standard UNE-EN ISO 6926-2016 A1-2021 in PDF full version. Additional info + preview on request

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