This Sparge Water Heater is a temperature controlled urn that allows you to heat up to 18 L of water. This makes the process easier, start heating your sparge water when you begin the mash to ensure it is ready for when you need to sparge. Once water is at required temperature, it will hold that temperature until changed or turned off. The Sparge Water Heater features: - 18 L Capacity - Stainless Steel Body - 2 kw Element - Sight Glass (with 1 L graduations visible) - Tap - Temperature Control - Heating Lights (to indicate input temperature has been reached or is still being heated) NOTE: Graduations on the scale are measured from the tap.