Handheld Refractometer Car Antifreeze Battery Acid Engine Coolant Tester Tool
It can also be used to check the health of electrolyte solution batteries. 1Pcs Pipette. And they can also be used to test the concentration of ethylene glycol or propylene glycol in antifreeze. Antifreeze Freezing Point ~50~0℃ 1℃ ±0.5℃.