Multi Column is based on the principal of interstage heat exchange to produce pure pyrogen free sterile distilled water. Entire operation of the plant is controlled by specially designed panel board therefore no need of attendant. In the event of any fault in any part of the system, the announciator sounds and fault is displayed on the board for attention. All contact parts are fabricated with type 316 acid-resisting stainless steel and all joints and connections are sealed with Teflon gaskets.