Efficacy : suitable for winter and use , which helps to avoid freezing or overheating Applications : this density meter is suitable for testing hot or cold batteries on 6-volt and 12-volt systems Easy to use , simple to operate , light and to carry is a practical tool for accurately detecting antifreeze Quickly the coolant tester to quickly understand the coolant The transparent contains sensitive pointers , which can measure the solidification point and boiling point of the liquid at the temperatures of Celsius and Durability : the antifreeze tester adopts plastics and rubber materials to easily the freezing and boiling temperature of the coolant in aqueous solution ; large rubber balls and rubber pipes can easily inhale liquids into small containers : high-precision , easy-to-read scale and pointer It is calibrated under°C and °F to facilitate testing The freezing point can cold and the boiling point can, Manufacturer: Watreketal