Title 40

SECTION 86.403-78

86.403-78 Abbreviations.

§ 86.403-78 Abbreviations.

The abbreviations used in this subpart have the following meanings in both capital and lowercase:

ASTM - American Society for Testing and Materials. C - Celsius. cc - Cubic centimetre(s). cfh - Cubic feet per hour. cfm - Cubic feet per minute. CH4 methane. cm - Centimetre(s). CO - Carbon monoxide. CO2 - Carbon dioxide. Conc - Concentration. cu. - Cubic. CVS - Constant volume sampler. EGR - Exhaust gas recirculation. EP - End point. EPA - Environmental Protection Agency. F - Fahrenheit. h - hour. HC - Hydrocarbon(s). Hg - Mercury. H2O - Water. in. - Inch(es). K - Kelvin. kg - Kilogram(s). km - Kilometre(s). kpa - Kilopascals. lb - Pound(s). m - Metre(s). mph - Miles per hour. mm - Millimetre(s). N2 - Nitrogen. N2O nitrous oxide. NOX - Oxides of nitrogen. No. - Number. O2 - Oxygen. Pa - Pascal(s). Pb - lead. ppm - Parts per million by volume. psi - Pounds per square inch. psig - Pounds per square inch gauge. R - Rankine. rpm - Revolutions per minute. wt - Weight. ° - Degree(s). % - Percent. [42 FR 1126, Jan. 5, 1977, as amended at 74 FR 56373, Oct. 30, 2009]

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