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Leather. Chemical tests. Preparation of chemical test samples. Original standard BS EN ISO 4044-2017 in PDF full version. Additional info + preview on request

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Leather. Chemical tests. Determination of pH and difference figure. Original standard BS EN ISO 4045-2018 in PDF full version. Additional info + preview on request

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Leather. Determination of sulphated total ash and sulphated water-insoluble ash. Original standard BS EN ISO 4047-1998 in PDF full version. Additional info + preview on request

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Leather. Chemical tests. Determination of matter soluble in dichloromethane and free fatty acid content. Original standard BS EN ISO 4048-2018 in PDF full version. Additional info + preview on request

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Dentistry. Polymer-based restorative materials. Original standard BS EN ISO 4049-2019 in PDF full version. Additional info + preview on request

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Welding, brazing, soldering and cutting. Nomenclature of processes and reference numbers. Original standard BS EN ISO 4063-2023 in PDF full version. Additional info + preview on request

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