MedTech Manufacturing worked example

Controlled Environment Monitoring Cost at 110% sampling frequency per location per event: a worked example

What does the result look like when sampling frequency per location per event reaches 110%? The full calculation is worked below with real intermediate numbers. Use this when planning EM program budgets, scheduling microbiology lab capacity, or evaluating the impact of adding new monitoring points to your classified environment.

The inputs for this scenario

  • Active EM monitoring locations in classified area: 24 locations (unchanged)
  • Sampling frequency per location per event: 110 % (raised for this scenario; the documented default is 100)
  • Minimum samples mandated per monitoring event: 5 samples (unchanged)

Working through the calculation

  • Applying the documented formula (Calculated EM samples = monitoring locations × sampling frequency rate) to the inputs above produces each figure below.
  • At this operating point the engine returns 27 samples for required sample size, the number this scenario is built around.
  • At this operating point the engine returns 27 samples for calculated sample.
  • At this operating point the engine returns 5 samples for minimum sample size.

How this compares with the baseline

  • Against the tool's baseline example, where sampling frequency per location per event sits at 100% and the headline result is 24 samples, this scenario comes in 12.5% above the baseline at 27 samples.
  • A figure at this level is achievable when sampling frequency per location per event is genuinely sustained, not just peaked for a shift. It sizes a single monitoring event by count only — it does not allocate samples by risk (Grade A vs Grade D), distinguish viable from non-viable methods, or account for alert/action-level re-sampling after an excursion.

Results at a glance

  • Required sample size: 27 samples (headline result)
  • Calculated sample: 27 samples
  • Minimum sample size: 5 samples

Run it with your numbers

  • Every input above is editable in the live Controlled Environment Monitoring Cost calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.