Nowadays, many people like to patronize second-hand bookshops. First, the price of new books is too high. Second, you can find some treasures by scouring second-hand books. However, when buying second-hand books, health problems can not be ignored. A few days ago, my friend bought some old books from the second-hand bookstall. After watching it for a few days, red spots appeared on his hands. The doctor told him that it was caused by bacterial infection carried in books.

To this end, the author reminds friends who like second-hand books, buy second-hand books, don't forget.

Remember to disinfect. Because the old books have been resold several times, some books are picked out by the stall owner from the waste collection station, and these books are rummaged in the old bookstall, and the sanitary conditions are very poor.

After buying old books, you'd better take them to dry in the sun. If the books are not damaged, gently wipe them with cotton balls and alcohol, then put them in plastic bags and freeze them in the freezer for a few days. This will not only sterilize, but also make old books as flat as new.

How to disinfect old books?

1. Wrap the book in a plastic bag, wrap it in a clean wet towel, and then put it in the microwave oven for "medium high" heating for about 5 minutes.

According to my practical experience, it is best to press the book with a flat plate and heavy objects and dry it in the sun, because the water in the pages will be evaporated. Someone on the internet suggested that you can put it in the freezer for a day or two and freeze the eggs.

After buying old books, you'd better take them to dry in the sun. If the book is not damaged, gently wipe it with a cotton ball dipped in alcohol, then put it in a plastic bag and freeze it in the freezer for a few days. This will not only sterilize, but also make old books as flat as new.

It is a simple and effective method to kill germs by irradiating books with ultraviolet tubes for more than half an hour. Jinan Library collects books returned by readers every week and puts them into ultraviolet disinfection boxes for disinfection. At the same time, he also reminded booksellers that it is best to disinfect the bought books with ultraviolet light and wash their hands after reading them to avoid getting sick.

Sunlight irradiation method (simple)

The best way to disinfect old books is to expose them to strong sunlight. After the water in the pages evaporates, turn them over and pat off dust, eggs, etc. However, precious books are not suitable and will damage the paper. It is best to disinfect with an ultraviolet disinfection cabinet.

Microwave disinfection method (simple)

A while ago, the "Handbook of Prevention and Control of SARS in 302 Hospital" was circulated on the Internet, which probably said something about the handling of books: wrap books in plastic bags, wrap them in clean wet towels, and then put them in a microwave oven to heat them at a "medium-high" level (650W power) for about 5 minutes.

Freeze disinfection method (simple)

Put the book in a plastic bag and freeze it in the refrigerator for a few days. Not only sterilization, but also make old books smooth as new.

Ozone disinfection method (difficult)

Use household ozone disinfection cabinet for disinfection. Put the books in the disinfection cabinet and turn on the power 1 hour or more.

Ultraviolet disinfection (difficult)

If there are special conditions, it is a simple and effective method to kill germs by irradiating books with ultraviolet tubes for more than half an hour. Jinan Library collects books returned by readers every week and puts them into ultraviolet disinfection boxes for disinfection. At the same time, he also reminded booksellers that it is best to disinfect the bought books with ultraviolet light and wash their hands after reading them to avoid getting sick.

Chemical disinfectant fumigation disinfection method (difficult)

This method can be used to disinfect a large number of books. If ethylene oxide is selected as a disinfectant, books and documents can be put into nylon bags, polyethylene plastic bags (be careful not to break) or closed containers, and carried out according to the method of "A 14 Clothing Disinfection". The dosage is more than 2 grams per liter of volume, but not too much. Leave at room temperature (about 20℃) for about 20 hours. Because epoxy dioxane has the characteristics of broad bactericidal spectrum and strong permeability, it is very suitable to choose this disinfectant, but attention should be paid to safety when using it. Pay attention to fire and explosion prevention.