Industrial Gases & Cryogenic Systems worked example

Gas Blending Cost at 72% charged blend scope: a worked example

Suppose charged blend scope falls to 72%. This page works the full calculation at that level so you can see exactly which result moves and by how much. Estimate gas blending cost from blend volume, cost per standard cubic foot or cylinder equivalent, blend scope, and fixed analysis or setup charges.

The inputs for this scenario

  • Blend gas volume: 2,400 SCF (held at the documented default)
  • Blended gas cost per volume: 0.18 $ / SCF (held at the documented default)
  • Charged blend scope: 72 % (the input this scenario stresses; the baseline uses 100)
  • Fixed setup and analysis charge: 175 $ (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Variable gas blending cost = blend gas volume × blended gas cost per volume × charged blend scope.
  • Total gas blending cost works out to 486 $ at these inputs, and this is the headline figure for the scenario.
  • Blended gas cost per volume works out to 0.2 $ / SCF at these inputs.
  • Variable gas blending cost works out to 311 $ at these inputs.
  • Fixed setup and analysis charge works out to 175 $ at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where charged blend scope sits at 100% and the headline result is 607 $, this scenario comes in 19.93% below the baseline at 486 $.
  • It computes the total cost of a gas blend as variable blended-gas cost (volume times unit cost times the charged scope) plus a fixed setup and analysis charge. When the numbers land here, the stressed input is the lever to work; the walkthrough above shows exactly how much each output recovers as it climbs back toward the baseline.

Results at a glance

  • Total gas blending cost: 486 $ (headline result)
  • Blended gas cost per volume: 0.2 $ / SCF
  • Variable gas blending cost: 311 $
  • Fixed setup and analysis charge: 175 $

Run it with your numbers

  • To rerun this with your own numbers, open the live Gas Blending Cost calculator, set charged blend scope to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.