The SUNTEX Microprocessor automatic water still is available with output of 4L/hr or 8L/hr, and can be benched or wall mounted. The water still produces the very highest quality pyrogen free water. Purity is also assured through the borosilicate glass(Boilers and Condensers) construction and the use of durable, silica sheathed heating elements. Convenient automatic operation: Combined with the microprocessor, the unique WS series water still simplifies operation and cleaning procedures. The still is supplied with a float switch which automatically shuts off the water still when the storage reservoir is full, enabling safe, unattended operation. Safety in operation: A high temperature cut-off system protects the heaters in the events of water-input failure and low level of water in boiler. The heater can be recovered from the automatic overheating cut-off by reset. Pretreated feed option: All stills can be used with pretreated reverse osmosis(RO), deionized or purified water. The pretreatment removes many contaminants from feed water to keep the glass clean.