B:Technical characteristics:

1. Table structure, newly designed, and it is convenient to be operated.

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. It uses a two layers cylinder, and electric stirrer, so it can keep temperature stable at controlling temperature.

C:Technical parameters:

1. Constant temperature bath:

(1) Cubage: 20 L;

(2) Types: two layers cylinder;

2. Working environment:

(1) Ambient temperature: -10°C35°C;

(2) Relative humidity: ＜85％;

3. Stirring motor:

(1) Power: 6 W;

(2) Speed: 1200 RPM;

4. Temperature controlling accuracy: ±0.1°C;

5. Heating power: two grades, 1000W and 650 W;

6. Power supply: AC 220V±10%, 50Hz±5%;

7. Total power consumption: not more than 1800 W;

8. Measurement range: room temperature 100°C;

9. Temperature sensor: Industrial platinum; scale number is Pt100