40 CFR § 116.2Chapter I
§ 116.2 Abbreviations.
Primary source
Verbatim text below is from the Electronic Code of Federal Regulations (eCFR), a public-domain U.S. government work. Always verify the current version with the eCFR before relying on it for any legal matter.
Full Text
ppm = parts per million mg = milligram(s) kg = kilogram(s) mg/l = milligrams(s) per liter= (approx.) ppm mg/kg = milligram(s) per kilogram= (approx.) ppm
[43 FR 10474, Mar. 13, 1978]
eCFR data current as of: June 10, 2026
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