Process Manufacturing worked example

Batch Mixing Time at 14% viscosity, sampling, and hold allowance: a worked example

Suppose viscosity, sampling, and hold allowance falls to 14%. This page works the full calculation at that level so you can see exactly which result moves and by how much. Estimate batch mixing time from batch volume, observed mixing rate, and process allowance.

The inputs for this scenario

  • Batch size to mix: 2,500 gal (held at the documented default)
  • Proven blend/turnover rate: 55 gal / min (held at the documented default)
  • Viscosity, sampling, and hold allowance: 14 % (the input this scenario stresses; the baseline uses 20)

Working through the calculation

  • The calculation starts from the formula this tool documents: Base mixing time = batch size to mix รท proven mixing rate.
  • required batch mixing time works out to 51.82 min at these inputs, and this is the headline figure for the scenario.
  • base mixing time works out to 45.45 min at these inputs.
  • mixing allowance applied works out to 14 % at these inputs.
  • proven mixing rate works out to 55 pieces / min at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where viscosity, sampling, and hold allowance sits at 20% and the headline result is 54.55 min, this scenario comes in 5% below the baseline at 51.82 min.
  • It computes the minutes to fully mix a batch by dividing batch size by a proven blend rate and applying a viscosity, sampling, and hold allowance. 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

  • required batch mixing time: 51.82 min (headline result)
  • base mixing time: 45.45 min
  • mixing allowance applied: 14 %
  • proven mixing rate: 55 pieces / min

Run it with your numbers

  • To rerun this with your own numbers, open the live Batch Mixing Time calculator, set viscosity, sampling, and hold allowance to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.