A refrigerant identifier is an absolute necessity. There is so much junk refrigerant in systems that you can NEVER take anyones word for it. Even if they are telling the truth, a previous owner or a dishonest shop may have put in snake oil refrigerant.

One recovery of junk will contaminate whatever refrigerant is in the cylinder and by law it is required that it be safely disposed of. This means that you pay a fee PLUS lose whatever clean refrigerant was already in the cylinder.

Have a great day,