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  1. Products
  2. Refrigerants
  3. 334 | R-134a with UV Leak Detection Dye

CERT334 | Certified AC Pro R-134a with UV Leak Detector



  • Contains approximately 12 oz. of R-134a
  • Contains approximately 0.3 oz. of a fluorescent ultraviolet dye
  • Dye glows to pinpoint small leaks within the A/C system
  • UV light and goggles used to locate leaks are sold separately
  • For use in vehicles with R-134a compatible A/C systems

Usage Directions

  1. Shake can well. Start engine and set A/C to MAX COOL.
  2. Following the instructions on the recharge hose, connect recharge hose to can and vehicle A/C low-side service port.
  3. While charging, rotate can between 12 o’clock and 3 o’clock every two to three seconds while continually agitating (shaking) the can back and forth.
  4. Continue this process until the correct amount of refrigerant is charged into the A/C system or the can is empty (five to 15 minutes).
  5. When the can feels empty, hold it upside down for one minute to dispense remaining contents before removing from service port. DO NOT OVERCHARGE SYSTEM!

Available Size

12.3 oz.

Product Guide Instructions A/C Service Port Finder FAQs