Cold Chain & Temperature-Controlled Operations worked example

Dry Ice Usage with dry ice sublimation use rate of 2.25 lb / hr: a worked example

Here is what the math looks like when conditions slip. We hold every other input steady and drop dry ice sublimation use rate to 2.25 lb / hr, then walk the calculation through step by step. Estimate dry ice required and cost from sublimation or packout rate, lane duration, and dry ice price.

The inputs for this scenario

  • Dry ice sublimation use rate: 2.25 lb / hr (the input this scenario stresses; the baseline uses 4.5)
  • Lane, hold, or packout duration: 36 hr (held at the documented default)
  • Dry ice cost per pound: 1.35 $ / lb (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Dry Ice Usage required = dry ice use rate × lane, hold, or packout duration.
  • dry ice usage required works out to 81 lb at these inputs, and this is the headline figure for the scenario.
  • total dry ice usage cost works out to 109 $ at these inputs.
  • lane, hold, or packout duration works out to 36 hr at these inputs.
  • dry ice cost per pound works out to 1.35 $ / unit at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where dry ice sublimation use rate sits at 4.5 lb / hr and the headline result is 162 lb, this scenario comes in 50% below the baseline at 81 lb.
  • The practical read: the gap between this scenario and the baseline is entirely attributable to dry ice sublimation use rate, so recovering it is worth quantifying in dollars before considering equipment or staffing changes. Sublimation rate varies with ambient temperature, box insulation, headspace, and how often the package is opened, so treat the result as a qualification starting point, not a guaranteed hold time.

Results at a glance

  • dry ice usage required: 81 lb (headline result)
  • total dry ice usage cost: 109 $
  • lane, hold, or packout duration: 36 hr
  • dry ice cost per pound: 1.35 $ / unit

Run it with your numbers

  • To rerun this with your own numbers, open the live Dry Ice Usage calculator, set dry ice sublimation use rate to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.