Single-Use Bioprocess Assemblies worked example

Warranty Reserve at 1.08% expected claim rate: a worked example in single-use bioprocess assemblies

This worked example runs the warranty reserve numbers for a tougher week than the baseline: 1.08% expected claim rate instead of the typical 1.5%. Estimate the warranty reserve for shipped single-use bioprocess assemblies from claim cost, expected claim rate, and investigation reserve.

The inputs for this scenario

  • Assemblies Shipped: 5,000 assemblies (held at the documented default)
  • Cost per Warranty Claim: 410 $/claim (held at the documented default)
  • Expected Claim Rate: 1.08 % (the input this scenario stresses; the baseline uses 1.5)
  • Field Investigation Reserve: 3,000 $ (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Warranty reserve = assemblies shipped x cost per claim x expected claim rate + field investigation reserve.
  • Total warranty reserve cost works out to 25,140 $ at these inputs, and this is the headline figure for the scenario.
  • Warranty reserve cost per unit works out to 5.03 $ / piece at these inputs.
  • Variable warranty reserve cost works out to 22,140 $ at these inputs.
  • Fixed warranty reserve adder works out to 3,000 $ at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where expected claim rate sits at 1.5% and the headline result is 33,750 $, this scenario comes in 25.51% below the baseline at 25,140 $.
  • Use it when accruing warranty liability at shipment, pricing a new assembly program, or reviewing whether historical claim rates justify the current reserve. A result at this level usually justifies acting on the stressed input before touching anything else, because every other figure in the table is downstream of it.

Results at a glance

  • Total warranty reserve cost: 25,140 $ (headline result)
  • Warranty reserve cost per unit: 5.03 $ / piece
  • Variable warranty reserve cost: 22,140 $
  • Fixed warranty reserve adder: 3,000 $

Run it with your numbers

  • To rerun this with your own numbers, open the live Warranty Reserve calculator, set expected claim rate to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.