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並前往http://www.iaqa.org/wp-content/uploads/2019/01/Fundamentals-of-Formaldehyde-and-Formaldehyde-Analysis-by-Stephen-Froelicher.pdf

Fundamentals of Formaldehyde and Formaldehyde Analysis

mg/m3 milligram per cubic meter. ▷ ppm parts per million. ▷ ppb parts per billion. ▷ Conversions. ▷ 1 ng/L = 1 μg/m3 = 0.001 mg/m3 or 1 mg/m3 = 1000 μg/ ...

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