I am a refrigeration technician.I have an argument with my coworker about the new air conditionning refrigerant r410. If I have a leak in a air cond system,the unit holds 22.3kilos of refrigerant,I recuperate 14kilogs , after when I recharge the system,liquid of course, can I reuse the refrigerant that I recuperated or because of the mixed in it I have to scrap it et recharge with complete new refrigerant? Thank u in advance.From a technician that never get the straight answer on the subject