This standard specifies methods for measuring airborne fibrous particles. There are many types of fibrous particles floating in the air, and depending on the type, a phase contrast microscope, phase contrast/dispersion microscope, scanning electron microscope, or transmission electron microscope is used. Specifies methods for measurements using phase contrast microscopes, phase contrast/dispersion microscopes, and scanning electron microscopes.
JIS K 3850-1:2006 Referenced Document
JIS A 1481 Determination of asbestos in building material products*, 2008-06-20 Update