UV Curing worked example

UV Cure Defect Rate (PPM) with cure-related defects this period of 6 defects: a worked example

Here is what the math looks like when conditions slip. We hold every other input steady and drop cure-related defects this period to 6 defects, then walk the calculation through step by step. Convert cure-related defects per shift into a parts-per-million rate, with a verdict against your customer or internal PPM target.

The inputs for this scenario

  • Cure-related defects this period: 6 defects (the input this scenario stresses; the baseline uses 12)
  • Total cured parts this period: 48,000 parts (held at the documented default)
  • PPM target: 200 PPM (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: PPM = defects ÷ total parts × 1,000,000.
  • Cure defect PPM works out to 0.01 PPM cure defects at these inputs, and this is the headline figure for the scenario.
  • Gap to PPM target works out to 200 points at these inputs.
  • Cure defects works out to 6 defects at these inputs.
  • Total cured parts works out to 48,000 parts at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where cure-related defects this period sits at 12 defects and the headline result is 0.03 PPM cure defects, this scenario comes in 50% below the baseline at 0.01 PPM cure defects.
  • The practical read: the gap between this scenario and the baseline is entirely attributable to cure-related defects this period, so recovering it is worth quantifying in dollars before considering equipment or staffing changes. PPM is only as good as your defect attribution — if non-cure failures get coded as cure defects, the rate is inflated and points you at the wrong root cause.

Results at a glance

  • Cure defect PPM: 0.01 PPM cure defects (headline result)
  • Gap to PPM target: 200 points
  • Cure defects: 6 defects
  • Total cured parts: 48,000 parts

Run it with your numbers

  • To rerun this with your own numbers, open the live UV Cure Defect Rate (PPM) calculator, set cure-related defects this period to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.