NTP

Definition: 
Normal Temperature and Pressure (see comment)
Subject Area 1: 
Science
Remarks: 
NTP - Normal Temperature and Pressure - is defined as air at 20degC (293.15 K, 68degF) and 1 atm (101.325 kN/m2, 101.325 kPa, 14.7 psia, 0 psig, 29.92 in Hg, 760 torr). Air Density 1.204 kg/m3 (0.075 pounds per cubic foot)