DSY-412 is used circular transparent glass cylinder with bottom lighting , so it is easy to watch the density meter. Digital display of temperature, high precision of PID temperature controller. It is possible to do 2 tests simultaneously. Compressor refrigeration technique, rapid cooling Standard Test Methods GB/T 1884,ASTM D1298 Number of Cylinder 2 Cylinders Temperature Stability ±0.25℃ Temperature control 20℃ or 15℃ Dimensions 400×550×700 (mm) Weight 20 kg Power Supply AC220V±10% 50HZ 1450W