Section 325.51157. Exposure monitoring; accuracy of measurement.

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An employer shall use a method of monitoring which is accurate, to a confidence level of 95%, to within plus or minus 25% for airborne concentrations of EtO at the 1 ppm TWA, to within plus or minus 35% for airborne concentrations of EtO at the action level of 0.5 ppm, and to within plus or minus 35% for airborne concentrations of EtO at the 5 ppm STEL.

History: 1988 AACS.

                    
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