Collection efficiencies of high flow rate personal respirable samplers when measuring Arizona road dust and analysis of quartz by x-ray diffraction.

Ann Occup Hyg · 2014 · PMC3979280 · PMID 24470535

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might not be significantno p-value reported

However, it collects more dust than most other samplers described as respirable and the additional variability in absolute mass (μg) might not be significant in relative terms (%) when weighing milligrams.

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Quoted from the open-access full text in Europe PMC under the licence the publisher applied. The sentence is reproduced exactly as published; the emphasis is ours.