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Terrestrial photovoltaic (PV) modules - Design qualification and type appr oval Part 1-4: Special requirements for testing of thin-film Cu(In,GA)(S,Se)2 based photovoltaic (PV) modules. Original standard BS EN IEC 61215-1-4-2021 in PDF full version. Additional info + preview on request

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Evaluation and routine testing in medical imaging departments - Acceptance and constancy tests. Imaging performance of computed tomography X-ray equipment. Original standard BS EN IEC 61223-3-5-2019 in PDF full version. Additional info + preview on request

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Fibre-optic communication subsystem test procedures Part 4-1: Installed cabling plant - Multimode attenuation measurement. Original standard BS EN IEC 61280-4-1-2019 (2020) in PDF full version. Additional info + preview on request

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Fibre-optic communication subsystem test procedures - Installed cabling plant. Attenuation measurement of MPO terminated fibre optic cabling plant using test equipment with MPO interfaces. Original standard BS EN IEC 61280-4-5-2020 in PDF full version. Additional info + preview on request

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Process measurement and control devices. General methods and procedures for evaluating performance - General considerations. Original standard BS EN IEC 61298-1-2026 in PDF full version. Additional info + preview on request

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Process measurement and control devices. General methods and procedures for evaluating performance - Tests under reference conditions. Original standard BS EN IEC 61298-2-2026 in PDF full version. Additional info + preview on request

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