Air Hygiene’s F-factor Calculator Tool is an easy-to-use Excel Worksheet that can be used for EPA Method 19 calculations, as well determining gas heating values in accordance with ASTM D 3588 and GPA 2172. This tool will provide stack testing calculations for :

• F-factor
• Fuel high-heat value (HHV)
• Fuel low-heat value (LHV)
• Molar Mass, Relative Density