This basic economical water still is perfect for general laboratory and educational distillations. Boiler and high-efficiency condenser are both constructed of borosilicate glass to ensure the highest in distillate purity. Long-life chromium-plated metal heater is protected by twin safety thermostats. Condenser features screw thread connections and plastic 3/8" ID hose barb fittings to quickly and safely change tubing without worrying about breaking the glassware. Built-in acid addition funnel and wastewater drain stopcock located below the level of the still allow for easy descaling without dismantling the glassware.