1. Structure: The bottom is flat and stable, the bottle body is thick and pressure-resistant, and the bottleneck is conducive to the installation of stoppers and the connection of instruments.
2. Material: Composed of high borosilicate glass, it exhibits excellent chemical stability and strong heat resistance.
3. Capacity: It comes in diverse specifications to satisfy different experimental requirements.
4. Usage: It is suitable to serve as a container for multiple chemical reactions, facilitating the observation of reaction phenomena.

Working Environment Conditions:
1. Temperature: The normal operating temperature is approximately 230°C, the instantaneous temperature resistance is about 300°C, and the temperature difference resistance is approximately 270°C.
2. Chemical Environment: Resistant to acid and alkali corrosion and has good hydrolysis resistance.
3. Mechanical Environment: Possesses high mechanical strength and high impact strength.
4. Optical Environment: Exhibits good light transmittance, with a light transmittance exceeding 92%.
5. Electrical Environment: Has a large electrical resistivity.

Precautions:
1. Heating Mode: Direct flame heating is prohibited. Indirect heating methods such as water bath, oil bath, sand bath or heating jacket should be adopted.
2. Capacity Limitation: When heating, the liquid contained should not exceed 2/3 of the flask's volume and should not be less than 1/3 to prevent liquid boiling over or uneven heating.
3. Handling Method: When holding the flask, hold the outer wall. Fingers should not touch the inner wall to avoid burns or interference with the experiment.
4. Experiment Completion: After the experiment, if there are conduits, etc., remove the conduits first to prevent backflow, then remove the heat source. Wait for the flask to cool down statically before carrying out subsequent processing.
5. Storage Requirements: It is not suitable for long-term storage of chemical reagents. After use, it should be washed, dried and stored upside down immediately.