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TEM NIOSH 7402 (40 Grid Openings Analyzed)

Category Asbestos Lab Services
Test TEM NIOSH 7402 (40 Grid Openings Analyzed)
Description

This method was developed as a Transmission Electron Microscopy (TEM) follow up to a Phase Contrast Microscopy (PCM) analysis via NIOSH 7400.  Taking advantage of the TEM's ability to positively identify each fiber, the method determines the percentage of asbestos fibers versus non-asbestos fibers in the sample.  This percentage is then applied to the original PCM result.

 

An example scenario where this method could be put to use is where it is suspected that PCM air samples are failing due to the presence of non-asbestos fibers (i.e. fiber glass).

 

Sample retention time - 60 days

CAS Number 67-64-1
Test Type Single
Test Prefix
Test Acetone
Synonym(s) Dimethyl Ketone
Method NIOSH 2016M
Matrices Tubes
Group Package Aldehyde Profile
Cinnaminson New Jersey - Corporate Lab (IH LAB 28)  X
Huntington Beach California (LAB 33) X
Indianapolis Indiana (LAB 16) X
Charlotte (Pineville) North Carolina (LAB 41) 192283
Minneapolis (New Hope) Minnesota (LAB 10)
Toronto Ontario Canada (LAB 55)
Chromotography Type / Detector HPLC/FL-UV
OSHA PEL or Other Value in mg/m3 2375
OSHA PEL or Other Value in µg/m3 2375000
OSHA PEL or Other Value in ppm 999.81
OSHA or Most Relevant OEL Notes 1000 ppm OSHA PEL TWA 250 ppm NIOSH REL TWA 250 ppm ACGIH TLV TWA 500 ppm ACGIH STEL 500 ppm CalOSHA PEL TWA 750 ppm CalOSHA STEL 3000 ppm CalOSHA Ceiling
Sampling Instructions / Interferences Protect from heat. Store in freezer, ship cold (5C).
Method link https://www.cdc.gov/niosh/docs/2003-154/pdfs/2016.pdf
Molecular Weight - grams/mol 58.08
Reporting Limits (Field Blank Limit) ug/sample 0.05
LOQ (ug/sample based on media)/sample 0.05
Default Reporting Units ppm

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