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Draft technical rule [PRE-ORDER]

VDI 3492:2024-12 - Draft

Indoor air, ambient air - Measurement of inorganic fibrous particles - Scanning electron microscopy method

German title
Innenraumluft, Außenluft - Messen anorganischer faserförmiger Partikel - Rasterelektronenmikroskopisches Verfahren
Publication date
2024-12
Original language
German
Pages
36

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Publication date
2024-12
Original language
German
Pages
36

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Short description
This standard specifies a method for determining the number concentration of inorganic fibrous particles in indoor air or outdoor air and the assignment of these fibers to specific fiber classes (chrysotile, amphibole asbestos, calcium sulfate, other inorganic fibers). Fiber counting and classification is carried out using the SEM/EDXA method (scanning electron microscope/energy-dispersive X-ray analysis). The detection limit of the method for the fiber count concentration under the standard conditions specified in the standard is 300 m-3, the analytical sensitivity is 100 m-3. Information is provided on the differentiation of product fibers and the determination of organic fibers. This standard is primarily aimed at experts, engineering offices, specialist remediation companies, laboratories and authorities.
Content
ICS
13.040.20
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