Industrial Gases & Cryogenic Systems worked example

Gas Purity Test Workload at 23% calibration, retest, and coa allowance: a worked example

Push calibration, retest, and coa allowance up to 23% and the picture changes. This example computes every intermediate figure at that operating point. Use it when planning oxygen, nitrogen, argon, helium, hydrogen, CO2, specialty gas, or blend analysis before release.

The inputs for this scenario

  • Gas samples requiring purity test: 48 samples (unchanged)
  • Purity tests completed per hour: 8 samples / hr (unchanged)
  • Calibration, retest, and COA allowance: 23 % (raised for this scenario; the documented default is 20)

Working through the calculation

  • Applying the documented formula (Base gas purity test workload = gas samples requiring purity test รท purity tests completed per hour) to the inputs above produces each figure below.
  • At this operating point the engine returns 7.38 hr for required gas purity test workload, the number this scenario is built around.
  • At this operating point the engine returns 6 hr for base gas purity test workload.
  • At this operating point the engine returns 23 % for calibration, retest, and coa allowance.
  • At this operating point the engine returns 8 pieces / min for purity tests completed per hour.

How this compares with the baseline

  • Against the tool's baseline example, where calibration, retest, and coa allowance sits at 20% and the headline result is 7.2 hr, this scenario comes in 2.5% above the baseline at 7.38 hr.
  • It computes the lab hours required to test a batch of gas samples for purity, including a percentage uplift for calibration, retests, and certificate documentation. The value of this scenario is the size of the gap it exposes: that gap, priced out over a year, is the budget you can justify spending to close it.

Results at a glance

  • Required gas purity test workload: 7.38 hr (headline result)
  • Base gas purity test workload: 6 hr
  • Calibration, retest, and COA allowance: 23 %
  • Purity tests completed per hour: 8 pieces / min

Run it with your numbers

  • Every input above is editable in the live Gas Purity Test Workload calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.