Refrigerant Recovery Tanks – All tanks meet ARI guidelines and government specifications for CFC, HCFC & HFC recovered refrigerants, including R11, R12, R22, R500, R502, R134a and R414b. Tough yellow & grey (blue for Automotive R134a) polyurethane finish protects against rust and corrosion. Atmospherically controlled heat treat oven assures clean cylinder interior. Rugged steel withstands the rigours of grueling work-a-day use. All tanks meet Transport Canada specifications.