Grain Milling, Dry Bulk Food & Feed Handling worked example

Batch Blend Accuracy with actual ingredient weight added to batch of 500 lb: a worked example

Here is what the math looks like when conditions slip. We hold every other input steady and drop actual ingredient weight added to batch to 500 lb, then walk the calculation through step by step. Calculate batch blend accuracy margin by comparing actual ingredient addition against required formula weight and normalizing the difference to the batch reference weight.

The inputs for this scenario

  • Actual ingredient weight added to batch: 500 lb (the input this scenario stresses; the baseline uses 1,005)
  • Formula target ingredient weight: 1,000 lb (held at the documented default)
  • Batch tolerance reference weight: 1,000 lb (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Blend accuracy margin = actual ingredient addition - required formula addition.
  • Blend accuracy weight margin works out to -50 % at these inputs, and this is the headline figure for the scenario.
  • Absolute margin works out to -500 value at these inputs.
  • Available amount works out to 500 value at these inputs.
  • Required amount works out to 1,000 value at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where actual ingredient weight added to batch sits at 1,005 lb and the headline result is 0.5 %, this scenario comes in 10,100% below the baseline at -50 %.
  • The practical read: the gap between this scenario and the baseline is entirely attributable to actual ingredient weight added to batch, so recovering it is worth quantifying in dollars before considering equipment or staffing changes. It checks a single ingredient against its target; it does not catch sequencing errors, wrong-ingredient substitutions, or mixer non-uniformity.

Results at a glance

  • Blend accuracy weight margin: -50 % (headline result)
  • Absolute margin: -500 value
  • Available amount: 500 value
  • Required amount: 1,000 value

Run it with your numbers

  • To rerun this with your own numbers, open the live Batch Blend Accuracy calculator, set actual ingredient weight added to batch to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.