Technical characteristics: 1. It uses a two layers cylinder, and electric stirrer, so it can keep temperature stable at controlling temperature. 2. It adopts a digital temperature controller, so it is convenient to set temperature with high temperature controlling accuracy. 3. You can put 7 pieces of solidifying point test tubes and 2 pieces of cold filter plugging point test tubes in the bath, so it can keep temperature of 9 pieces of samples constant at a time. 4. Table structure, newly designed, and it is convenient to be operated. Technical parameters: 1. Power supply: AC 220V±10%, 50Hz±5%; 2. Heating power: two grades, 1000W and 650 W; 3. Stirring motor: (1) Power: 6 W; (2) Speed: 1200 RPM; 4. Measurement range: room temperature ~100ºC; 5. Temperature controlling accuracy: ±0.1ºC; 6. Constant temperature bath: (1) Cubage: 20 L; (2) Types: two layers cylinder; 7. Working environment: (1) Ambient temperature: -10ºC~35ºC; (2) Relative humidity: <85%; 8. Temperature sensor: Industrial platinum; scale number is Pt100; 9. Total power consumption: not more than 1800 W;