Rules for obtaining laboratory chemicals

Attention should be paid to when taking chemicals in the laboratory:

1. Don't touch drugs with your hands, don't put your nostrils to the mouth of the container to smell the smell of drugs (especially gas), and don't risk tasting the smell of drugs.

2. It is strictly prohibited to discharge waste gas, waste liquid and waste at will. The "three wastes" produced in the laboratory should be treated according to the prescribed methods to avoid environmental pollution.

3, the remaining drugs in the laboratory should be handled in accordance with the provisions, generally can't put back the original bottle, also can't take out the experimental site, more can't throw away.

4. Many experimental drugs are flammable, explosive, corrosive or toxic, so you must be careful when using these drugs, and carefully understand their related properties and precautions for safe use before operation.

5. It is absolutely forbidden to mix drugs at will to avoid accidents.

6. Eating and abusing kindling are strictly prohibited in the laboratory, and experimental utensils cannot be used as tableware.

Extended data

The key points of using massive solid are: one level, two levels and three slow sliding.

Three principles of drug acquisition:

(1) The "three noes" principle of drug abuse: don't touch drugs with your hands; You can't put your nostrils to the mouth of the container to smell the smell of the medicine directly; You can't taste any medicine. It is called "Don't touch, smell or taste"

(2) Principle of economy: Take and use drugs in strict accordance with the dosage prescribed in the experiment; If there is no prescribed dose, it should generally be taken according to the minimum amount: 1 ~ 2 ml of liquid, as long as the bottom of the test tube is covered with solids.

(3) Disposal principle: Do not put the remaining drugs in the experiment back into the original bottle, nor throw them away at will, let alone take them out of the laboratory, but put them in designated containers.

References:

Baidu Encyclopedia-Chemical Experiment Operation