Glass Container & Bottle Manufacturing worked example

Bottle Weight Variation at 72% weight study capture efficiency: a worked example in glass container & bottle manufacturing

Suppose weight study capture efficiency falls to 72%. This page works the full calculation at that level so you can see exactly which result moves and by how much. Estimate excess or short glass represented by bottle weight variation using sampled containers, average weight deviation, and weighing or sampling efficiency.

The inputs for this scenario

  • Containers in weight study: 24,000 containers (held at the documented default)
  • Average weight deviation per container: 3.5 g / container (held at the documented default)
  • Weight study capture efficiency: 72 % (the input this scenario stresses; the baseline uses 100)

Working through the calculation

  • The calculation starts from the formula this tool documents: Theoretical glass weight variation = containers represented by weight study × average weight deviation per container.
  • Glass weight variation allowance works out to 116,667 g at these inputs, and this is the headline figure for the scenario.
  • Theoretical glass weight variation works out to 84,000 g at these inputs.
  • Variation scaling allowance works out to 32,667 g at these inputs.
  • Weight study capture efficiency works out to 72 % at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where weight study capture efficiency sits at 100% and the headline result is 84,000 g, this scenario comes in 38.89% above the baseline at 116,667 g.
  • It computes total glass weight variation as containers times average per-container deviation, then scales that up by dividing by the weight study's capture efficiency. When the numbers land here, the stressed input is the lever to work; the walkthrough above shows exactly how much each output recovers as it climbs back toward the baseline.

Results at a glance

  • Glass weight variation allowance: 116,667 g (headline result)
  • Theoretical glass weight variation: 84,000 g
  • Variation scaling allowance: 32,667 g
  • Weight study capture efficiency: 72 %

Run it with your numbers

  • To rerun this with your own numbers, open the live Bottle Weight Variation calculator, set weight study capture efficiency to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.