GA500P Refrigerant IdentifierFeatures and Benefits: Measures purity % of R-12, R-134a and R-22 Audible compensation/features ensures accurate air measurement 98% accuracy for all gases from 100 to 490C or 500 to 1200F Features one button testing with a total test cycle time of 60 seconds Includes: Two hose assembly for both R-12 and R-13....(more info)