... , heating quickly, temperature stable, easy to operate;2. Dual purpose water and oil: room temp.~100°C, room temp.~200°C ... to outside testing machines;5. Optional match cold water circulator, connected to running water to cool down the system temperature quickly, fit ... -25RT~300°C0.5280x250x300235x160/21XGHC-30RT~300°C0.5400x330x230310x280/30 Super Thermostatic Water/Oil Bath