Blue Silica Gel Breather is to absorb the moisture in the air sucked in by the transformer during the breathing process. This breather has the moisture absorption capacity and signals the saturation degree by changing its colour. Most of the power generation companies use these breathers fitted to the conservator of oil filled transformers. Blue Silica Gel Breather also have an oil cup fitted with, so that the dust particles get settled in the cup.Silica gel in the breather will be blue when installed and they turn to pink colour when they absorb moisture which indicates the crystals should be replaced. This provides an economic and efficient means of controlling the level of moisture entering the conservator tank during the breathing process.