The Robinair R-ID Plus Refrigerant Analyzer is a tool to meet the service needs of technicians working on vehicles equipped with either R134A or the newer R-1234yf refrigerant. It quickly and accurately analyzes refrigerant purity in a vehicle's A/C system to determine if it is good or bad, a requirement of R-1234yf service. It is certified to the SAE J2912 standard and is capable of connecting directly to any SAE J2843 or J3030 AC service machine that has an external USB port and is not equipped with a refrigerant analyzer. A large, easy to read color display shows results in amount of R-1234yf, R-134a, R-12, R-22 and hydrocarbons in percentage, and % air in pure R-1234yf & R-134a, quickly and accurately, helping technicians decide their next step. The Robinair R-ID Plus comes with an internal printer to print final test results. Capable of testing R-12 with optional R-12 hose (not included).