We need OSHAs sampling and analysis error (SAE) for the analysis of crystalline silica in order to apply it to the results we get from our private contract lab. Where can we obtain OSHAs SAE?
This request indicates some confusion with regard to industrial hygiene analyses and the meaning of SAE. Generally speaking, neither NIOSH nor OSHA mandate either specific analytical procedures or analytical equipment. Good science should prevail, and when permitted, other methods may be used. Each IH laboratory should determine its own SAE values based on the analysis of quality control samples, spiked samples or other tests of recovery. The private contract lab should be contacted for its SAE estimates for the time period of the analyses. The SAE is not a universal constant but is a time-varying function of instrument and analyst performance for particular analytes. The OSHA PEL for dust containing quartz is given by PEL = 10 / (%Quartz + 2) , where the %Quartz in the respirable dust is calculated from the analytically determined mass of quartz in the gravimetrically determined mass of the dust. The standardized concentration is a measure of exposure severity to which the SAE is appl
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