RapidStill I. Provides distillations for nitrogen determination. Designed for labs that are determining micro quantities of protein/nitrogen or performing one or two macro determinations per day by diluting and aliquoting the sample. Accepts digested samples up to 4 mL (max.) and gives reproducible results in ranges as low as 1 mg/L Kjeldahl nitrogen. A one-piece still is mounted on high-density polyethylene benchtop console that contains all operating controls. Each distillation takes only five minutes. Features: built-in glass aspirator that purges spent samples after determination; one-piece borosilicate glass still with chemically inert PTFE stopcocks; 115-volt immersion heater inside the water reservoir; variable heat control switch for controlling steam; and 8-foot, 3-wire cord with plug. Includes metering valve for installation between the water source and the water inlet tube connector to the steam reservoir.