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Gas Leak Rate Calculator
Note: The unit conversion factor for SI units provided by API RP14B 5th edition Appendix E
contains an error. This page uses the correct SI units conversion factor.
Units Calculation Notes
Initial Pressure: psig
Final Pressure: psig
Test Length: minutes
Gas Volume: ft3
Temperature: F
Leak Rate: scf/min  
z Factor Initial:
z Factor Final:
Gas Properties
Gas Gravity: Air = 1.0
CO2: %
H2S: %
N2: %
Revised: 3 November 2010

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