1. Precision: Class A precision, it features a small capacity error, typically within 0.1%, catering to the demands of high-precision experiments.
2. Graduations: The graduation lines on the bottleneck are distinct, facilitating precise reading and manipulation.
3. Design: It adopts a fine-necked pear-shaped form and a flat-bottomed structure, ensuring accurate volume determination and stable placement.
4. Colorless and Transparent: The colorless and transparent glass not only enables a clear visualization of the liquid state within the flask but also proves beneficial for experimental operations like spectral analysis, precluding any interference on the experimental outcomes caused by the color of the glass.

Working Environment Conditions:
1. Constant Temperature Environment: It should be employed in a constant temperature setting of 20℃ ± 5℃ to minimize the influence of temperature variations on the liquid volume and guarantee the volumetric accuracy of the volumetric flask.
2. Suitable Humidity: The relative humidity should be regulated within the range of 40% to 60% to avert the adverse effects of excessive or insufficient humidity on liquid measurement and the performance of the volumetric flask.
3. Avoidance of Intense Light: Direct exposure to intense light should be evaded to preclude its impact on the accuracy of liquid volume measurement and simultaneously prevent the aging of the glass.
4. Stable Environment: It ought to be placed on a stable workbench, distanced from vibration sources, to prevent liquid spillage or displacement of the volumetric flask caused by vibration, which might affect the measurement precision.
5. Prevention of Corrosion: Contact with highly corrosive chemical substances should be avoided to prevent the corrosion of the glass surface, which could influence the accuracy and service life of the volumetric flask.
6. Constant Air Pressure: It should be utilized in a constant air pressure environment to avoid the effects of air pressure fluctuations on liquid volume measurement and ensure the reliability of experimental data.

Precautions:
Check for Completeness: Confirm that the volumetric flask is devoid of cracks, scratches, or other damages.
Leak Test: Inspect the sealing property of the stopper to ensure the absence of leakage.
Washing: Rinse initially with tap water, followed by 3 - 4 washes with purified water. When necessary, wash with chromic acid lotion.
Drying: Invert and allow natural drying. Drying by heat is not permitted.
Dissolving the Solute: Dissolve the solute in a beaker. Direct dissolution within the volumetric flask is prohibited.
Transfer of Solution: Use a glass rod for diversion, enabling the solution to flow slowly into the volumetric flask along the rod and avoiding the liquid adhering to the flask wall.
Volume Fixing: Add the solvent until approaching the marking line. Add dropwise carefully to ensure the bottom of the liquid meniscus is tangent to the marking line.
Shaking Well: Tightly seal the stopper, invert and shake to evenly mix the liquid, repeating approximately 15 times.
Storage: For short-term storage of the solution. When not in use for an extended period, clean thoroughly and place a paper between the stopper and the flask.
Temperature Control: Hot solutions need to be cooled to room temperature before being injected into the volumetric flask.
Avoidance of Contamination: Ensure the use of sterile vessels and aseptic operation processes.