| The cassette is designed to operate at a flow rate of 15 LPM. Flow rate is critical for accurate results. Remember to calibrate and recalibrate the pump prior to all sampling (15 liters/minute). *Lower flow rates may result in a collection loss of some spores and the accumulation of others in a non-uniform manner. Therefore, it is critical to run the sampling pumps at the manufacturers recommended air flow rate. AIR-O-CELLS Product # 8715301B |