Watlow’s ultra pure, patented thick film quartz heater modules provide a superior heating method for semiconductor wet chemistry applications. And now, the thick film quartz heater modules feature a non-contact, optical level switch that protects the heater from excessive boiling, dry fire or insufficient fluid flowing through the heater. The use of thick film technology has allowed Watlow to supplant the inefficient heat output of an infrared quartz heater while avoiding the permeability problems experienced with Teflon® coated products. “Watlow’s thick film heating elements are applied directly onto the exterior surface of the quartz tubes. This is a more efficient transfer of heat energy with rapid response to changes in flow and temperature,” said Roly Juliano, product manager. Intended for deionized (DI) water and aggressive chemicals, these thick film quartz heater modules provide ultra pure semiconductor-grade quartz performance. This state-of-the-art heater is ideal for use in applications such as ammonium hydrochloride, hydrochloric acid, hydrogen peroxide, phosphoric acid and ultra pure 18 megohm deionized water and others. Improved product benefits include: rapid thermal response, maximum efficiency in varying flow conditions, compact package size, glassware fluid pressures up to 75 psi, low element temperature, single- and multi-phase power forms and ultra-pure quartz, which eliminates risk of metal contamination.