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NIOSH 7400

Category Asbestos Lab Services
Test NIOSH 7400

Asbestos and Other Fibers by PCM


  • This analysis is used primarily for estimating asbestos concentrations in air. 
  • It is used to show compliance with limits set by NIOSH, OSHA, and other regulatory agencies for area samples as well as for personnel monitoring. 
  •  Fibers less than approximately 0.25 microns in diameter will not be detected with this method.
  •  The method can also be used to estimate the airborne concentration of other, non asbestos materials as well.
  • The NIOSH 7400 method is often used in conjunction with electron microscopy methods such as the NIOSH 7402 method to aid in fiber identification. 
  • Sample retention time is 60 days

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