Air Sample Run Time and Volume

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

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Formula and source

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.

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