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3. Ratios

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Convert Ratios to:

• Ratios to Cubic Meters per Million Cubic Meters

  • 1 Cubic Meter per Million Cubic Meters = 0.000001 volume fraction. 1 m3/10^6 m3 = 0.000001 v/v.

• Ratios to Cubic Meters per Thousand Cubic Meters

  • 1 Cubic Meter per Thousand Cubic Meters = 0.001 volume fraction. 1 m3/10^3 m3 = 0.001 v/v.

• Ratios to Million Standard Cubic Feet per Billion Standard Cubic Feet

  • 1 Million Standard Cubic Feet per Billion Standard Cubic Feet = 0.001 volume fraction. 1 MMscf/Bscf = 0.001 v/v.

• Ratios to Mole Fractions

  • 1 Mole Fraction = 1 volume fraction in this category. 1 mol/mol = 1 v/v. Common in gas analysis.

• Ratios to Mole Percent

  • 1 Mole Percent = 0.01 volume fraction in this category. 1 mol% = 0.01 mol/mol. Common in natural gas analysis.

• Ratios to Parts per Billion by Volume

  • 1 Part per Billion by Volume = 0.000000001 volume fraction. 1 ppbv = 1/1,000,000,000 v/v. Used for trace gas composition.

• Ratios to Parts per Million by Volume

  • 1 Part per Million by Volume = 0.000001 volume fraction. 1 ppmv = 1/1,000,000 v/v. Used for trace gases.

• Ratios to Parts per Trillion by Volume

  • 1 Part per Trillion by Volume = 0.000000000001 volume fraction. 1 pptv = 1/1,000,000,000,000 v/v. Used for ultra-trace gases.

• Ratios to Percent by Volume

  • 1 Percent by Volume = 0.01 volume fraction. 1% v/v = 0.01 v/v. Used for gas mixtures.

• Ratios to Standard Cubic Feet per Million Standard Cubic Feet

  • 1 Standard Cubic Foot per Million Standard Cubic Feet = 0.000001 volume fraction. 1 scf/MMscf = 0.000001 v/v.

• Ratios to Standard Cubic Feet per Thousand Standard Cubic Feet

  • 1 Standard Cubic Foot per Thousand Standard Cubic Feet = 0.001 volume fraction. 1 scf/Mscf = 0.001 v/v.

• Ratios to Thousand Standard Cubic Feet per Million Standard Cubic Feet

  • 1 Thousand Standard Cubic Feet per Million Standard Cubic Feet = 0.001 volume fraction. 1 Mscf/MMscf = 0.001 v/v.

• Ratios to Volume Fractions

  • 1 Volume Fraction means the whole gas volume. Base unit for natural gas composition by volume.

• Ratios to Volume Percent

  • 1 Volume Percent = 0.01 volume fraction. 1 vol% = 0.01 v/v. Common for helium and gas composition.

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