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Method for the determination of the proof and the comparative tracking indices of solid insulating materials. Original standard BS EN IEC 60112-2025 in PDF full version. Additional info + preview on request

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Quartz crystal units of assessed quality - Guidelines for the use. Original standard BS EN IEC 60122-2-2025 in PDF full version. Additional info + preview on request

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Sound system equipment - Objective rating of speech intelligibility by speech transmission index. Original standard BS EN IEC 60268-16-2020 (2025) in PDF full version. Additional info + preview on request

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Sound system equipment - Headphones and earphones. Original standard BS EN IEC 60268-7-2025 in PDF full version. Additional info + preview on request

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Fixed capacitors for use in electronic equipment - Sectional specification. Fixed capacitors for electromagnetic interference suppression and connection to the supply mains. Original standard BS EN IEC 60384-14-2023 + A1-2025 in PDF full version. Additional info + preview on request

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Optical fibre cables - Generic specifications. Basic optical cable test procedures. Mechanical test methods. Multiple cable coiling and uncoiling performance, Method E33. Original standard BS EN IEC 60794-1-133-2025 in PDF full version. Additional info + preview on request

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