Labtron Semi-Automatic Kjeldahl Analyzer measures 0.1-250 mg N with ≥99.5% recovery in 3-4 minutes. It processes solids up to 6 g and liquids up to 16 ml, using 1.2-3 liters of water per minute. Features include a 4.3" LCD display, easy mode switching, and automated alkali and boric solution filling.