SATP conditions

Standard ambient temperature and pressure (SATP) conditions means 298.15 Kelvin (25 C, 77 F) and 100.0 kilopascals (14.504 psi, 0.987 atm) pressure. The enthalpy of water at SATP conditions is 50 Btu/lb.

Source

40 CFR § 60.5580

Scoping language

As used in this subpart, all terms not defined herein will have the meaning given them in the Clean Air Act and in subpart A (general provisions of this part).