P. L. Tandon & Co. Offers Table Pattern Barnsted Type Electrical Water Still. P. L. Tandon & Co. Is an ISO 9001 2000 certified co. And manufactures laboratory instruments. The Table Pattern Barnsted Type Electrical Water Still is used to remove all types of impurities such as Inorganic, Organic, Gaseous, Bacterial, Pyrogenic, etc. It has a convenient drain valve easy accessibility to the entire evaporating chamber and flushing. The outer wall of this water still is of mild steel painted and inner boiler is of stainless steel. The gap between these two walls is filled up with special grade glass wool for avoiding loss of heat.