Drying is performed by circulation of warm air electrically heated, regulated by and electronic temperature controller(range 0°-180?, accuracy ±1?). The material to be tested is dried within a metal container suspended from an electronic balance. Two successive weights of the same value determine the point which moisture content can be calculated. Includes an electronic balance with 2100 g capacity and 0.01 g accuracy. The sample is weighed automatically by means of a basket connected to the balance.