Urea DEF Fluid CHEK Professional Tester

If the DEF concentrate is not correct, injectors may become clogged and the DEF will not work properly. The DEF-CHEK is designed to test the urea concentration of Diesel Exhaust Fluid. Professional disc-type16 1/4" tester is accurate at all temperatures. Easy to read discs are magnified by convex design of the clear SAN plastic barrel. One-piece bulb and neoprene dip tube.

• Test Urea Concentrate of Diesel Exhaust Fluid
• If mixture is 0.7% off, mfg suggest replacing the DEF and identifying the problem
• Temperature compensating discs test DEF hot or cold
• Tester is a cost effective tool to test DEF
• IF DEF is not tested, it will cause harm to the vehicle