Educational & Classroom Lab Equipment worked example

Classroom Lab Inventory Coverage with available educational equipment inventory of 3,000 units: a worked example

This scenario runs the classroom lab inventory coverage calculation on the strong side: available educational equipment inventory of 3,000 units, with every other input held at its documented default. Use it when classroom lab inventory coverage in educational and classroom lab equipment is being sized for a buffer or safety stock review.

The inputs for this scenario

  • Available educational equipment inventory: 3,000 units (raised for this scenario; the documented default is 1,200)
  • Average daily school-order demand: 85 units / day (unchanged)
  • Planning reserve divisor: 1.1 x (unchanged)

Working through the calculation

  • Applying the documented formula (Raw inventory days of coverage = available educational equipment inventory รท average daily school-order demand) to the inputs above produces each figure below.
  • At this operating point the engine returns 32.09 days for protected days of supply, the number this scenario is built around.
  • At this operating point the engine returns 35.29 days for unprotected days.
  • At this operating point the engine returns 3,000 pieces for inventory.
  • At this operating point the engine returns 85 pieces / day for daily usage.

How this compares with the baseline

  • Against the tool's baseline example, where available educational equipment inventory sits at 1,200 units and the headline result is 12.83 days, this scenario comes in 150% above the baseline at 32.09 days.
  • Use it during reorder reviews and seasonal demand planning to decide whether current stock spans the lead time ahead. Treat this as a target state: the delta against the baseline quantifies what the improvement is worth before you commit to chasing it.

Results at a glance

  • Protected days of supply: 32.09 days (headline result)
  • Unprotected days: 35.29 days
  • Inventory: 3,000 pieces
  • Daily usage: 85 pieces / day

Run it with your numbers

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

Last reviewed 2026-05-12.