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A clean filter is found to weigh 10.00g. After 24h in a hi-vol sampler, the filter plus dust weighs 10.10g. The air flow at start
A clean filter is found to weigh 10.00g. After 24h in a hi-vol sampler, the filter plus dust weighs 10.10g. The air flow at start and end of the test was 60 and 40ft3/min, respectively. What is the concentration of particulate matter
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