Mixing, Blending & Industrial Batch Processing worked example
Material Variance at 71% recovery factor: a worked example in mixing, blending & industrial batch processing
Suppose recovery factor falls to 71%. This page works the full calculation at that level so you can see exactly which result moves and by how much. Compare actual material used in a batch against the standard charge and apply a recovery factor to size the true material variance.
The inputs for this scenario
- Actual material used: 260 kg (held at the documented default)
- Standard recipe charge: 250 kg (held at the documented default)
- Recovery factor: 71 % (the input this scenario stresses; the baseline uses 98)
Working through the calculation
- The calculation starts from the formula this tool documents: Usage ratio = actual material used รท standard recipe charge.
- Effective throughput works out to 0.74 ratio at these inputs, and this is the headline figure for the scenario.
- Raw throughput works out to 1.04 ratio at these inputs.
- Efficiency works out to 71 % at these inputs.
- Runtime works out to 250 hr at these inputs.
How this compares with the baseline
- Against the tool's baseline example, where recovery factor sits at 98% and the headline result is 1.02 ratio, this scenario comes in 27.55% below the baseline at 0.74 ratio.
- It computes the raw usage ratio of actual to standard material, then multiplies by the recovery factor to give a net material variance ratio. 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
- Effective throughput: 0.74 ratio (headline result)
- Raw throughput: 1.04 ratio
- Efficiency: 71 %
- Runtime: 250 hr
Run it with your numbers
- To rerun this with your own numbers, open the live Material Variance calculator, set recovery factor to your actual value, and adjust the remaining inputs to match your operation.
Last reviewed 2026-05-12.