Media dispensing (different dispensing volume)

Details: Dispense the media at 10mL/min flow rate for 6 seconds (dispensing volume is 1mL). Dispensing 3 cycles (interval time is 6 seconds), then pump pause. Waits for the external trigger signal, then dispense the media at 20mL/min flow rate for 6 seconds (dispensing volume is 2mL). Dispensing 3 cycles again (interval time is 6 seconds), then pump stops.