or
Refractometer, Handheld, Reichert; Rhino; Ranges: 1.100-1.400 Specific Gravity; Antifreeze Protection, 32deg.F to minus60deg.F; Coolant Concentration, 0 to 70% Ethylene Glycol, 0 to 63% Propylene Glycol; Refractive Index: 1.3330-1.4048