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Refrigerated hydrocarbon fluids. Dynamic measurement. Requirements and guidelines for the calibration and installation of flowmeters used for liquefied natural gas (LNG) and other refrigerated hydrocarbon fluids. Original standard BS ISO 21903-2020 in PDF full version. Additional info + preview on request

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Gas turbine exhaust systems with or without waste heat recovery. Original standard BS ISO 21905-2020 in PDF full version. Additional info + preview on request

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Fine bubble technology. Characterization of microbubbles. Off-line evaluation of size index. Original standard BS ISO 21910-1-2020 in PDF full version. Additional info + preview on request

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Fine bubble technology. Characterization of microbubbles - In-situ dynamic image analysis method. Original standard BS ISO 21910-2-2025 in PDF full version. Additional info + preview on request

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Textiles. Qualitative and quantitative analysis of some cellulose fibres (lyocell, cupro) and their blends. Fibre identification using scanning electron microscopy and spectral analysis methods. Original standard BS ISO 21915-1-2020 in PDF full version. Additional info + preview on request

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Textiles. Qualitative and quantitative analysis of some cellulose fibres (lyocell, cupro) and their blends. Blend quantification using light microscopy method. Original standard BS ISO 21915-2-2020 in PDF full version. Additional info + preview on request

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