... R22, hydrocarbons and air. 2.Easy&profitable to use Features:Refrigerant Identifier delivers the features and benefits today’s professional A ... and automatically determines if the purity of R12 and R134a refrigerant is at industry acceptable levels. Specifications:Weight: 8.0 ... (Internal)Output: Digital display and LEDs, Optional printer module (Internal)Refrigerant : R12, R134a, R22, HC, and EPA S.N.A ...