Can captured mass exceed inlet mass?

No. Check moisture, inventory release and the test window if the balance produces that result.

Does 90% overall efficiency mean 90% for every particle size?

No. Cyclones collect different particle sizes with different efficiencies.

No. Correct both measurements to a consistent dry-solids basis first.

Measured overall collection exceeds the target you entered.

Industrial Filtration, Separation & Dust Collection calculator

Measure a cyclone’s overall dry-solids collection efficiency. Enter captured and inlet mass from the same test and your specified efficiency target.

Captured Dry Solids: Recovered dry solids over the complete test window.
Inlet Dry Solids: Measured incoming dry solids in the same test.
Required Collection Efficiency: Performance target specified for the tested solids mixture.

Best suited to cyclone acceptance tests, matched solids balances.
Overall mass efficiency does not establish fine-particle or exposure compliance.

Can captured mass exceed inlet mass? No. Check moisture, inventory release and the test window if the balance produces that result.
Does 90% overall efficiency mean 90% for every particle size? No. Cyclones collect different particle sizes with different efficiencies.
Can I compare wet and dry weights? No. Correct both measurements to a consistent dry-solids basis first.
What does a negative shortfall mean? Measured overall collection exceeds the target you entered.

Last reviewed 2026-10-12.