Industrial Filtration, Separation & Dust Collection worked example

Coolant Filtration Rate at 68% target coolant cleanliness rate: a worked example

This worked example runs the coolant filtration rate numbers for a tougher week than the baseline: 68% target coolant cleanliness rate instead of the typical 95%. Calculate coolant filtration attainment from acceptable filtered coolant volume, total coolant volume, and target filtration rate.

The inputs for this scenario

  • Coolant volume passing cleanliness spec: 9,200 gal (held at the documented default)
  • Total coolant volume filtered: 10,000 gal (held at the documented default)
  • Target coolant cleanliness rate: 68 % (the input this scenario stresses; the baseline uses 95)

Working through the calculation

  • The calculation starts from the formula this tool documents: Coolant filtration rate = acceptable filtered coolant volume ÷ total coolant volume processed × 100.
  • Coolant filtration rate works out to 92 % at these inputs, and this is the headline figure for the scenario.
  • Coolant filtration gap to target works out to -24 points at these inputs.
  • Acceptable filtered coolant volume works out to 9,200 count at these inputs.
  • Total coolant volume processed works out to 10,000 count at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where target coolant cleanliness rate sits at 95% and the headline result is 92 %, this scenario lands almost exactly on the baseline at 92 %.
  • Use it during coolant audits, when commissioning a new filtration stage, or when tool life or surface finish starts slipping. A result at this level usually justifies acting on the stressed input before touching anything else, because every other figure in the table is downstream of it.

Results at a glance

  • Coolant filtration rate: 92 % (headline result)
  • Coolant filtration gap to target: -24 points
  • Acceptable filtered coolant volume: 9,200 count
  • Total coolant volume processed: 10,000 count

Run it with your numbers

  • To rerun this with your own numbers, open the live Coolant Filtration Rate calculator, set target coolant cleanliness rate to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.