In general, it is good laboratory practice to clean your Pumps after any use.
Where possible, we recommend pumping acetone through the pump liquid path and associated liquid channels and valves. This is an excellent solvent for cleaning and also evaporates readily after use.
Pump for 5 minutes @ 1ml/min and leave for 5 minutes
2 Pump air for 5 minutes to dry (only 30 seconds for the Piezoelectric Pumps)
This procedure should be performed in a well ventilated area preferably with Local Extraction Ventilation and wearing appropriate PPE.
The P-Pump also requires the O-Ring inside the lid of the pressure chamber to have a light coating of silicon grease. Simply pop out the O-Ring with, for e.g. a fine pipette tip or non-metallic tool. Wipe it clean with a lint free wipe and smear a thin layer of silicon grease before reinserting into the lid. This only needs done once or twice a year.