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Plastic beakers have a high-temperature resistance of approximately 100°C. I. High-Temperature Resistance and Reasons for Plastic Beakers Plastic beakers are typically made of materials such as polypropylene (PP) or polystyrene (PS) and exhibit a certain degree of heat resistance at specific temperatures. Generally, the high-temperature resistance of plastic beakers is around 100°C. This is because the melting points of polypropylene and polystyrene are approximately 165°C and 240°C, respectively. Beyond these temperatures, the plastic starts to melt, losing its structure and properties. II. Guidelines for Use
- Avoid exposing plastic beakers to high-temperature environments to prevent melting or deformation.
- Prevent contact with organic solvents, strong acids, strong bases, and other substances that may cause chemical reactions and damage the structure and properties of the plastic beaker.
- Choose a suitable alcohol lamp or electric hot plate for heating, and control the heating time and temperature to avoid exceeding the high-temperature resistance.
- Clean the plastic beaker promptly after use and store it in a cool, dry place, avoiding direct sunlight, high temperatures, and humidity. III. Conclusion Plastic beakers find wide application in laboratories, but their high-temperature resistance is relatively low. Proper usage and storage can extend their lifespan, enabling the safe and efficient completion of experimental tasks.