What is PPM? | Parts Per Million Formula & Calculation - Video & Lesson Transcript | Study.com
UNITS OF CONCENTRATION
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Measurement Units and Concentration Analogies 1 ppm = 1,000 ppb = 1,000,000 ppt 0.001 ppm = 1ppb = 1,000 ppt
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Converting Occupational Exposure Limits from mg/m3 to ppm : OSH Answers
Parts per Million - ppm
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Parts-per notation - Wikipedia
