Meiji Asbestos Fiber Counting Microscopes
Asbestos fiber counting utilizes phase contrast
microscopy for estimating asbestos concentrations of airborne fibers.
Meiji asbestos fiber counting microscopes meet the NIOSH 7400 and OSHA
ID 160 requirements for asbestos fiber counting.
Methodology for phase contrast microscopy analysis: NIOSH 7400 & OSHA ID 160
Phase contrast microscopy is the method that is
primarily used for estimating asbestos concentrations of airborne
fibers. This method is quick and can be performed on-site for a rapid
determination of cencentrations of asbestos fibers in the air. Phase
contrast microscopy does not positively differentiate between asbestos
and other fibers. Positive identification of asbestos fiber must be
performed using polarized light microscopy (see above) or electron
microscopy (method 7402).
Learn more about the different types of
asbestos microscopes here.