Coatings, Inks & Specialty Chemical Production worked example

Retained Sample Inventory with retained samples created per day of 110 samples / day: a worked example

Push retained samples created per day up to 110 samples / day and the picture changes. This example computes every intermediate figure at that operating point. planning retain sample storage and retention inventory for batch release records

The inputs for this scenario

  • Retained samples created per day: 110 samples / day (raised for this scenario; the documented default is 42)
  • Required retention period: 180 days (unchanged)
  • Retain safety stock: 250 samples (unchanged)

Working through the calculation

  • Applying the documented formula (Retention demand = retained samples created per day × required retention period) to the inputs above produces each figure below.
  • At this operating point the engine returns 0 days for protected days of supply, the number this scenario is built around.
  • At this operating point the engine returns 0.61 days for unprotected days.
  • At this operating point the engine returns 110 pieces for inventory.
  • At this operating point the engine returns 180 pieces / day for daily usage.

How this compares with the baseline

  • Against the tool's baseline example, where retained samples created per day sits at 42 samples / day and the headline result is 0 days, this scenario comes in 162% above the baseline at 0 days.
  • It computes the required retained-sample inventory from the daily retain creation rate times the retention period, plus a safety-stock buffer. 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

  • Protected days of supply: 0 days (headline result)
  • Unprotected days: 0.61 days
  • Inventory: 110 pieces
  • Daily usage: 180 pieces / day

Run it with your numbers

  • Every input above is editable in the live Retained Sample Inventory calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.