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Thexton 107, Cold-Chek Professional Anti-Freeze Tester

Professional 16 1/4" disc-type tester is used to test propylene glycol-based antifreeze in automotive radiators and fresh-water systems in RVs and boats. Number of floating discs measures level of protection. Temperature compensating tester is accurate whether coolant is hot or cold. Readings in Celsius and Fahrenheit. 

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