The EQ Series Constant Temperature Controlled Baths are designed to be contaminant-free, rapid heating units suitable for wafer processing in wet etch, high temperature acid, and solvent application (excluding hydrofluoric acid). Manufactured using high purity fused quartz (minimum 99.9999% silica), these EQ Series baths represent the standard of excellence and reliability for integrated circuit manufacturing processing. The EQ Series baths are of molded construction which provide maximum strength and eliminates sharp corners – facilitating the ease of cleaning. Each vessel includes a bottom well to accommodate a stirrer or drain. Additionally, the bath has been designed so that no temperature sensors or elements contact the process. The use of the dual thermodiscs independent of the controller thermocouples guarantees power shutdown.