Air Sample Run Time and Volume

Spore-trap run time, total sampled volume, and total pump time from calibrated flow and target volume.

Run the calculator

Example

You enter

Pump flow (L/min, calibrated) 15
Target volume per cassette (L) 75
Cassettes in the event (incl. outdoor control) 3

You get

Run time per cassette 5
Run time (sec) 300
Total sampled volume 225 L
Total pump time (sequential) 15 min

Details, formula, and sources

run_time_min = target_volume_L / flow_rate_lpm; run_time_sec = run_time_min * 60; total_volume_L = target_volume_L * sample_count; total_time_min = run_time_min * sample_count (sequential on one pump).

ASTM D7391 (spore-trap method) and the cassette manufacturer's instructions; AIHA-accredited laboratory analysis.

ASTM D7391 licensed; cassette manufacturer instructions free with the product. AIHA lab accreditation directory free at aiha.org.

Estimate. AHJ and licensed professional govern.

Field names used by the API: flow_rate_lpm, target_volume_L, sample_count, run_time_min, run_time_sec, total_volume_L, total_time_min

Spore-trap defaults 15 L/min flow, 75 L target volumecommon spore-trap cassette instructions