Telelec corporation india offers vertical immersion type chemical heater. In this two type of heaters are available, one is alkaline heater and other is lead covered heater. Both are tubular heaters, manufactured from a special grade of chrome nickel steel tube to withstand corrosion. Former is used for alkaline cleaning solutions, detergents and chemicals normally corrosive to mild steel. Later is used for metal plating baths, like copper dull nickel, chrome etc. Can also be used in pickling baths with maximum 10% concentration of sulphuric acid, but not in any other acid.