Dry heating system by metal blocks (7.6 x 9.6 cm). Temperature adjustable up to 150 °C (accuracy ±0.2 °C (single position)/0.5 °C (dual position)).Function mode: Continuos with alarm timer (1’ – 99h 59’). LED display for temperature and time. 230v/50Hz. Insulation rating IP21 (DIN EN60529). PT1000 external temperature sensor. Warranty 2 years. No block included.Suitable for COD digestion (148 °C), TOC determination (120 °C), Chromium-total determination (100 °C), Phosphate-total determination (100°C) and Nitrogen-total determination (100 °C).