N.D. Admin. Code § 33.1-15-01-05
The abbreviations used in this article have the following meanings:
| A | - | ampere |
|---|---|---|
| A.S.T.M. | - | American Society for Testing and Materials |
| Btu | - | British thermal unit |
| °C | - | degree Celsius (centigrade) |
| cal | - | calorie |
| CdS | - | cadmium sulfide |
| cfm | - | cubic feet per minute |
| CFR | - | Code of Federal Regulations |
| cu ft | - | cubic feet |
| CO | - | carbon monoxide |
| CO2 | - | carbon dioxide |
| dcf | - | dry cubic feet |
| dcm | - | dry cubic meter |
| dscf | - | dry cubic feet at standard conditions |
| dscm | - | dry cubic meter at standard conditions |
| eq | - | equivalents |
| °F | - | degree Fahrenheit |
| ft | - | feet |
| g | - | gram |
| gal | - | gallon |
| g eq | - | gram equivalents |
| gr | - | grain |
| hr | - | hour |
| HCl | - | hydrochloric acid |
| Hg | - | mercury |
| H2O | - | water |
| H2S | - | hydrogen sulfide |
| H2SO4 | - | sulfuric acid |
| Hz | - | hertz |
| in. | - | inch |
| j | - | joule |
| °K | - | degree Kelvin |
| k | - | 1,000 |
| kg | - | kilogram |
| l | - | liter |
| lpm | - | liter per minute |
| lb | - | pound |
| m | - | meter |
|---|---|---|
| m³ | - | cubic meter |
| meq | - | milliequivalent |
| min | - | minute |
| mg | - | milligram - 10⁻³ gram |
| Mg | - | megagram - 10⁶ gram |
| ml | - | milliliter - 10⁻³ liter |
| mm | - | millimeter - 10⁻³ meter |
| mol | - | mole |
| mol.wt. | - | molecular weight |
| mV | - | millivolt |
| N₂ | - | nitrogen |
| N | - | newton |
| ng | - | nanogram - 10⁻⁹ gram |
| nm | - | nanometer - 10⁻⁹ meter |
| NO | - | nitric oxide |
| NO₂ | - | nitrogen dioxide |
| NOₓ | - | nitrogen oxides |
| O₂ | - | oxygen |
| Pa | - | pascal |
| PM | - | particulate matter |
| PM₂.₅ | - | particulate matter with an aerodynamic diameter less than or equal to a nominal 2.5 micrometers |
| PM₁₀ | - | particulate matter with an aerodynamic diameter less than or equal to a nominal 10 micrometers |
| ppb | - | parts per billion |
| ppm | - | parts per million |
| psia | - | pounds per square inch absolute |
| psig | - | pounds per square inch gauge |
| °R | - | degree Rankine |
| s-sec | - | second |
| scf | - | cubic feet at standard conditions |
| scfh | - | cubic feet per hour at standard conditions |
| scm | - | cubic meters at standard conditions |
| scmh | - | cubic meters per hour at standard conditions |
| SO₂ | - | sulfur dioxide |
| SO₃ | - | sulfur trioxide |
| SOₓ | - | sulfur oxides |
| sq ft | - | square feet |
|---|---|---|
| std | - | at standard conditions |
| TSP | - | total suspended particulate |
| µg | - | microgram - 10-6 gram |
| V | - | volt |
| W | - | watt |
| Ω | - | ohm |
History: Effective January 1, 2019; amended effective July 1, 2020.