Super Savings Item! Save 39% on the Thexton THE108 Tester by Thexton at Daily News Detroit. MPN: THE108. Hurry! Limited time offer. Offer valid only while supplies last. The DEF-CHEK is designed to test the urea concentration of diesel exhaust fluid. Professional disc-type 16-1/4 inch tester is accurate at all temperatures. Design to make sure the urea content is maintained at 32.5 percent.Easy to read discs are magnified by convex design. SAN plastic barrel. One-piece bulb and neoprene dip tube.
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