Extech RF40 Portable Coolant & Battery Acid Refractometer With ATC - Freeze Point Tester For Glycol Coolant & Battery Specific Gravity - Handheld,

HHIP 8010-0018 Water Soluble Or Synthetics Coolant Tester Refractometer, 0-18% Solution Measuring Range

Smartref Digital Refractometer By Anton Paar - Antifreeze & Coolant Tester, Ethylene Glycol, Propylene Glycol, Freezing Point, Temperature, Refractive

Refractometer Industrial Coolant CNC Cutting Fluid Tester Automatic ATC 0-32%

Tiaoyeer Antifreeze Refractometer - 3-In-1 Coolant Tester For Checking Freezing Point, Concentration Of Ethylene Glycol Or Propylene Based Automobile

4-In-1 DEF Antifreeze Coolant Refractometer For Automobile Antifreeze System, Diesel Exhaust Fluid, Battery Acid And Windshield Washer Fluid

FVRYCA High Precision New Antifreeze Monitoring Digital Refractometer For Ethylene Glycol And Propylene Glycol For Engine Coolant Tester With ATC