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Ophthalmic optics. Contact lenses. Hygienic management of multipatient use trial contact lenses. Original standard BS EN ISO 19979-2023 in PDF full version. Additional info + preview on request

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Ophthalmic instruments. Corneal topographers. Original standard BS EN ISO 19980-2021 in PDF full version. Additional info + preview on request

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Solid biofuels. Safety of solid biofuel pellets. Safe handling and storage of wood pellets in residential and other small-scale applications. Original standard BS EN ISO 20023-2018 in PDF full version. Additional info + preview on request

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Solid biofuels. Safe handling and storage of solid biofuel pellets in commercial and industrial applications. Original standard BS EN ISO 20024-2020 in PDF full version. Additional info + preview on request

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Plastics. Thermoplastic polyester (TP) moulding and extrusion materials. Designation system and basis for specification. Original standard BS EN ISO 20028-1-2019 in PDF full version. Additional info + preview on request

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Plastics. Thermoplastic polyester (TP) moulding and extrusion materials. Preparation of test specimens and determination of properties. Original standard BS EN ISO 20028-2-2017 in PDF full version. Additional info + preview on request

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