Sealey AK4122 Propylene Glycol Antifreeze Tester Disc Type Tests modern propylene glycol coolant antifreeze, hot or cold. Protection level is indicated by the number of the five large coloured discs which float in the sample. Easy-to-read temperature table on the virtually unbreakable plastic body. Tests modern propylene glycol coolant antifreeze, hot or cold Protection level is indicated by the number of discs floating in the sample Easy-to-read temperature table Tough, virtually unbreakable, plastic body Model No AK4122
