Antifreeze Refractometer Coolant Tester for Checking Freezing Point, G1E1
It can also be used for checking the condition of electrolyte solution. Scale : glycol based: 32 to -84 degree F, propylene glycol based:32 to -60 degree F. Glycol: -84~32°F,0~-50°C. Propylene Glycol: -60~32°F,0~-50°C.