• Quickly and accurately determine refrigerant purity
• Displays amount of R-1234yf, R-134a, R-12, R-22 and Hydrocarbons in percentage
• Displays % air in pure R-1234yf & R-134a
• Capable of testing R-12 with optional R-12 hose
• Improved oil resistance with user replaceable oil restrictor
• Large Color Display
• Battery powered with internal lithium battery
• Ergonomic design with protective boot