1.74ug/m3 or. 0.54PPB. 0.12ug/m3 or. 0.04PPB. 5ug/m3. Bromo methane. 5 PPM. NA. NA. Carbon tetrachloride. 10 PPM. 85.52ug/m3 or. 13.67PPB. 0.07ug/m3 or.
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