The surface adopts imported PFA polytetrafluoroethylene anticorrosive non-stick coating treatment, strong corrosion resistance, resistance to 260 high temperature. To prevent acid and acid gas corrosion of the instrument; Room temperature to 260, can work continuously for 48 hours, thermal efficiency is more than 5 times higher than the flat electric heating plate, lower carbon;Three-dimensional heating, small temperature difference between holes, so that each part of the sample heat evenly, prevent heat loss, faster digestion, easy to use, long service life; PID temperature control digital display, temperature control accuracy 1, voltage :220V/50Hz