Amazon.com: OEMTOOLS 24507 Professional Series Ethylene Glycol Antifreeze Tester,Tests Freezing Point of Antifreeze and Proper Water/Coolant Mixture : Automotive
Prestone AF1420 Professional Antifreeze Tester: Antifreeze Testers (797496004697-2)
Amazon.com: Antifreeze Refractometer for Glycol, Antifreeze, Coolant and Battery Acid. Antifreeze Tester for Measuring Freezing Point of Automobile Antifreeze and Battery Fluid Condition. : Automotive
Best antifreeze tester 2018 | Carbuyer
ABN | Deluxe Antifreeze and Coolant Tester Hydrometer Tester Antifreeze Tester - Walmart.com