The national institute for occupational safety and health

Reference no: EM13155579

the national institute for occupational safety and health (NIOSH) sets standered for ccl4 in air at 12.6 mg/m^3 of air (a time average over 40 hr).the ccl4 found in a sample is 4800 ppb . does the sample meet the NIOSH standered?

Reference no: EM13155579

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