Eyewear, Lenses & Vision Products worked example

Tint Bath Capacity at 99% tint bath availability: a worked example

What does the result look like when tint bath availability reaches 99%? The full calculation is worked below with real intermediate numbers. a tinting lead needs to know whether sunglass or specialty tint demand fits today’s bath schedule

The inputs for this scenario

  • Lenses per tint bath cycle: 32 lenses / cycle (unchanged)
  • Available tint bath cycles: 18 cycles (unchanged)
  • Tint bath availability: 99 % (raised for this scenario; the documented default is 92)
  • First-pass tint acceptance: 95 % (unchanged)

Working through the calculation

  • Applying the documented formula (Gross tint capacity = lenses per tint bath cycle × available tint bath cycles) to the inputs above produces each figure below.
  • At this operating point the engine returns 542 lenses for usable first-pass tinted lenses, the number this scenario is built around.
  • At this operating point the engine returns 576 lenses for gross tint bath capacity.
  • At this operating point the engine returns 5.76 lenses for tint capacity lost to bath downtime or changeover.
  • At this operating point the engine returns 28.51 lenses for tint capacity lost to color or cosmetic rejection.

How this compares with the baseline

  • Against the tool's baseline example, where tint bath availability sits at 92% and the headline result is 503 lenses, this scenario comes in 7.61% above the baseline at 542 lenses.
  • A figure at this level is achievable when tint bath availability is genuinely sustained, not just peaked for a shift. It assumes a stable, well-maintained dye bath; aged or contaminated dye, frequent color changes and difficult substrates (polycarbonate, high-index) push real acceptance below your entered figure.

Results at a glance

  • Usable first-pass tinted lenses: 542 lenses (headline result)
  • Gross tint bath capacity: 576 lenses
  • Tint capacity lost to bath downtime or changeover: 5.76 lenses
  • Tint capacity lost to color or cosmetic rejection: 28.51 lenses

Run it with your numbers

  • Every input above is editable in the live Tint Bath Capacity calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.