Cold-Chek Propylene Glycol Anti-Freeze and Coolant Tester
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Thexton Cold-Chek Propylene Glycol Anti-Freeze and Coolant Tester

Part No. THX100 Warranty  
For testing propylene glycol-based antifreeze in automotive radiators and freshwater system in RV's and boats
Accurate to -50 degrees F
Ball float to show freeze protection
Tests coolant hot or cold
Pocket protector
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