Labtron Graphite Block Kjeldahl Digester is an eco-friendly, anti-corrosive digester with infrared heating, 20 digestion programs, and PID temperature control. It offers a range of 5°C to 450°C, 300 ml tube capacity, and ±1°C accuracy. Features include over-current, overload, and high-temperature protection, plus a user-friendly LCD display.