BS ISO 8672:2014 Air quality. Determination of the number concentration of airborne inorganic fibres by phase contrast optical microscopy. Membrane filter method
ASTM D7200-12 Standard Practice for Sampling and Counting Airborne Fibers, Including Asbestos Fibers, in Mines and Quarries, by Phase Contrast Microscopy and Transmission Electron Microscopy*, 2023-12-24 Update
EN 1540 Workplace exposure - Terminology*, 2023-12-24 Update
ISO 13137 Workplace atmospheres — Pumps for personal sampling of chemical and biological agents — Requirements and test methods*, 2022-08-31 Update
BS ISO 8672:2014 history
2015BS ISO 8672:2014 Air quality. Determination of the number concentration of airborne inorganic fibres by phase contrast optical microscopy. Membrane filter method