What should be contraindicated when doing experiments in the laboratory

To do experiments in the laboratory, safety is not to be underestimated For the sake of the safety of the majority of laboratories, the furniture and accessories manufacturers in the laboratory have specially collected a number of taboo items for experiments in the laboratory Please pay attention to them, and don't make a big loss due to a little mistake: 1 No eating or drinking in the laboratory Someone once drank the nearby reagent because he was eating while looking at the microscope, even though he had to wash his stomach in case of emergency It is also prohibited to use laboratory reagents as "food and additives", such as NaCl or distilled water Because you don't know the purity and impurities in NaCl, so do distilled water Remember! 2 Habit must not be inhaled by mouth Some people said, "I know this is water!" In spite of this, do you know the content and cleanliness of the water? Do you know the cleanliness of the container where the water is stored? Even at home, you can't do this Some people like to use their mouths to suck kerosene or gasoline 3 When you smell the gas, you need to volatilize it into your nose Don't look at a small operation I heard that someone went to the hospital because he smelled a mouthful of Cl2 4 When you brush the bottle, you must brush both inside and outside, so that you don't need to spend time later to find out whether the dirty things are inside or outside 5 The lab can't wear shoes with iron soles because they will rub and electrify 6 When there are many samples or some samples need to be used in the future, they must be labeled, even if you have a good memory Otherwise, once you forget, you may spend several times of the original time to think about what it is 7 After any experiment fails, don't rush to dump the reactants Maybe later, when you wake up, you will regret the impulse just now 8 When doing experiments, make sure to record the data truthfully Random or even tampering with the data will cause trouble for you 9 Wear a glass lens glasses in the experiment to prevent solvent and corrosive substances from splashing on the eyes, and the resin lens is easy to be corroded 10 Always keep the table top of your laboratory furniture clean, not only to let you get good results, but also for your own mood 11 Before the experiment, you must think about what you do It's not empty talk to do the experiment preview well, otherwise, it's easy to make mistakes and accidents in a mess