Safety common sense of pp test-bed

1. All reagents, standard samples and solutions in the laboratory should be labeled. Do not put reagents and drugs that do not conform to the label when placing them.

2. It is forbidden to use laboratory utensils, test tubes, etc. to contain food and drinks in the laboratory.

3. When the sulfuric acid dilution experiment is conducted in the laboratory, it needs to be conducted in a heat-resistant beaker, and then slowly inject the sulfuric acid solution into the water, stir while pouring. If the temperature is too high, it needs to be cooled for a while before continuing. It is strictly prohibited to pour water into the sulfuric acid solution!

PP test-bed

4. If volatile liquid reagents are used during the experiment, they can be cooled with cold water for a period of time. When opening, do not point the bottle mouth at the experimenter, so that they can be operated in the fume hood.

5. If it is necessary to heat or generate a large number of heat sources during the experiment, it is necessary to conduct the experiment on a tripod or add asbestos mesh to avoid damage to the test table due to high temperature.

6. During the experiment, strong acids and bases are used. The utensils and equipment used in the experiment should be cleaned and maintained by the experimenter to avoid accidents.

7. When removing the boiling solution during the experiment, gently shake it with a bottle clamp and then remove it to avoid splashing and hurting people.

8. The glass rod, glass tube, thermometer, etc. shall be padded with cotton cloth when inserting or pulling out the rubber plug and rubber tube. It is not allowed to insert or pull out forcibly to avoid accidents.