Single-Use Bioprocess Assemblies worked example

Bag Film Yield at 99% target bag film yield rate: a worked example

What does the result look like when target bag film yield rate reaches 99%? The full calculation is worked below with real intermediate numbers. Use it when bag film yield in single-use bioprocess assemblies needs a clean rate and gap-to-target you can put on a tier board.

The inputs for this scenario

  • Bag film assemblies passing inspection: 8 count (unchanged)
  • Bag film assemblies inspected in the lot: 250 count (unchanged)
  • Target bag film yield rate: 99 % (raised for this scenario; the documented default is 95)

Working through the calculation

  • Applying the documented formula (Bag film yield rate = bag film yield count ÷ total bag film yield population × 100) to the inputs above produces each figure below.
  • At this operating point the engine returns 3.2 % for bag film yield rate, the number this scenario is built around.
  • At this operating point the engine returns 95.8 points for bag film yield gap to target.
  • At this operating point the engine returns 8 count for bag film yield count.
  • At this operating point the engine returns 250 count for total bag film yield population.

How this compares with the baseline

  • Against the tool's baseline example, where target bag film yield rate sits at 95% and the headline result is 3.2 %, this scenario lands almost exactly on the baseline at 3.2 %.
  • A figure at this level is achievable when target bag film yield rate is genuinely sustained, not just peaked for a shift. It only reflects the units you actually inspected; if sampling is not representative or defects escape inspection, the reported yield overstates true film quality.

Results at a glance

  • Bag film yield rate: 3.2 % (headline result)
  • Bag film yield gap to target: 95.8 points
  • Bag film yield count: 8 count
  • Total bag film yield population: 250 count

Run it with your numbers

  • Every input above is editable in the live Bag Film Yield calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.