Flavors, Fragrances & Aroma Chemicals worked example

Rework Cost at 72% rework scope captured: a worked example in flavors, fragrances & aroma chemicals

Here is what the math looks like when conditions slip. We hold every other input steady and drop rework scope captured to 72%, then walk the calculation through step by step. Estimate cost to rework off-spec flavor, fragrance, aroma chemical, solvent blend, or packaged product lots.

The inputs for this scenario

  • Lots or batches requiring rework: 9 lots (held at the documented default)
  • Rework cost per lot: 1,250 $ / lot (held at the documented default)
  • Rework scope captured: 72 % (the input this scenario stresses; the baseline uses 100)
  • Fixed retest, documentation, or disposal cost: 1,800 $ (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Variable rework cost = lots or batches requiring rework × rework cost per lot × rework scope captured.
  • Total rework cost works out to 9,900 $ at these inputs, and this is the headline figure for the scenario.
  • Rework cost per affected lot works out to 1,100 $ / piece at these inputs.
  • Variable rework cost works out to 8,100 $ at these inputs.
  • Fixed retest, documentation, or disposal cost works out to 1,800 $ at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where rework scope captured sits at 100% and the headline result is 13,050 $, this scenario comes in 24.14% below the baseline at 9,900 $.
  • The practical read: the gap between this scenario and the baseline is entirely attributable to rework scope captured, so recovering it is worth quantifying in dollars before considering equipment or staffing changes. It treats per-lot rework cost as uniform; a lot needing full re-distillation costs far more than one needing a small top-spike, so segment by failure mode for accuracy.

Results at a glance

  • Total rework cost: 9,900 $ (headline result)
  • Rework cost per affected lot: 1,100 $ / piece
  • Variable rework cost: 8,100 $
  • Fixed retest, documentation, or disposal cost: 1,800 $

Run it with your numbers

  • To rerun this with your own numbers, open the live Rework Cost calculator, set rework scope captured to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.