What are the precautions for using laboratory glassware?
1. Glassware should be carefully inspected before use to avoid using instruments with cracks. Specially used for pressure reduction, pressurization, or heating operations, it is even more important to carefully inspect.
2. Only clean glassware can be used. Wash all dirty glassware before use.
3. Do not wear rubber gloves when cleaning glassware, as it will make it very slippery.
4. All glassware should be placed in the center of the workbench instead of at the edges.
5. Instruments such as beakers, flasks, and test tubes, due to their thin walls and low mechanical strength, must be handled carefully when used for heating.
6. Thick walled containers such as suction bottles and wide mouthed bottles often rupture due to rapid heating. Only heat-resistant glassware can be heated.
7. When inserting a glass tube or thermometer into a rubber or cork stopper, it often breaks and causes injury.
8. Major accidents that may occur during glass processing must be cleaned of flammable gases in the container before operation.
9. When opening closed pipes or tightly sealed containers, liquid spraying or explosion accidents often occur due to their internal pressure.
