HYDROCOLLATOR is the modality of thermotherapy. It is thermostatically controlled machine to warm the water at a specific temperature of 100° F. The inner outer chamber of unit is made of stainless steel and mounted on a heavy duty casters. Thermostatically controlled unit, Concealed air heaters which does not come in the direct contact of water and chamber, Temperature maintaining indicator and mains indicator, S.S. Chamber to avoid oxidization due to continuous use of water, Silica gel packs of different shape and size