TRZ 4-in-1 Antifreeze Refractometer Ethylene Glycol, Propylene Glycol black
$30.29
And they can also be used to test the concentration of ethylene glycol or propylene glycol in antifreeze Fluids. Ethylene Glycol: -84°F-32°F 0-70% VOL. Propylene Glycol: -60°F-32°F 0-63% VOL.
