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Every day, we will be in close contact with our face, but is the towel you used clean? In the interview, the reporter learned that some people do not change towels for months or even a year. Some people have never given the towel a poison. Many people think that the towels will be washed every day and will not be dirty.
Is the truth like this? On the 16th, the staff of professional testing organizations are doing fungal culture experiments. Through experiments, we learned that the number of towel colonies used by many people is more than 10 million.
In the past few days, among the more than 60 citizens interviewed by the reporter, the habit of using towels has been roughly classified into four categories: using a dry towel, using a wet towel, alternating towels, and special towels. We collected four samples and tested the difference in the number of colonies for each type of towel under these four different usage habits.
Experimental time:
December 5 to December 19, 2013
Experimental location:
A professional testing agency in Xi'an Chengnan
Laboratory staff:
Our reporter and testing agency staff
Laboratory equipment:
Four towels, professional testing equipment
Sample one
Dry towel shared by face washing
The 27-year-old Mr. Fang used a towel for bathing and washing his face. Mr. Fang said that the used towel will be hung in the bathroom and kept dry. Every once in a while, the towel will be put in a boiling water pot for 15 minutes, and salt will be added inside. Mr. Fang’s towel took half a year, the color became darker and it was softer to touch.
Sample two
Alternate dry towel
The 32-year-old Mr. Zhang lives in Dongguan South Street and his wife is a doctor. Mr. Zhang has two towels for two years. Every day, the wife will dry the used towels on the balcony and let him use another dry towel. He said that the two towels have never been properly sterilized, because he and his wife felt that the towel that had sun-dried the sun had already achieved the effect of sterilization.
Sample three
Dry towel for face washing
Ms. Wang, 25, has a towel for washing her face. Ms. Wang said that she would dry the towel every day and wait until the next day to use the towel again. In the winter, she bought a small, thin square towel to wipe her face so that the towel can easily dry. Ms. Wang’s towel has been used for 3 months.
Sample four
Wet towel hanging in the bathroom all year round
Ms. Yan, 55, lives in the Ziwei Garden District of Chengnan. She likes to use wet towels. Every time she washes her face, she will wet the towel and use it again. Ms. Yan said that she had put the towel in the bathroom for a long time, because it was often washed and used, and it usually took half a year to change it. This towel has been used for 4 months.
experimental method
Cut the towel sample to detect the number of colonies
On December 5, the reporter sent the four towels to the professional testing agency for testing. The staff said that it takes a week to detect the bacterial colonies of the towel.
The staff said that the method of detecting the number of bacteria in the towel is as follows: the towel is placed in 200 ml of sterile physiological saline, and after 10 times dilution, the dilution is inoculated on a sterile plate and cultured with different culture agents. The time, then get the number of bacterial colonies and the number of fungal colonies in the towel. On December 19th, the staff made statistics on the final experimental results.
Result analysis
The number of colonies on wet towels is the most
It is not difficult to see from the experimental results that the wet towels measured in the bathroom for a long time have the largest number of colonies, followed by the dry towels that have not been used separately. The dry towels that have been used for two years are used in the third place. The number of dry towel colonies is ranked last.
The staff said that microorganisms include bacteria and fungi, and infectious diseases are caused by these two kinds of bacteria. Their living conditions are related to humidity and temperature, and also related to the material of towels, people's habits and seasons. In general, fungi grow faster in spring and autumn, and bacteria grow faster in summer.
The results of this experiment can be seen in the number of bacteria and the number of fungi in the four towels, but because the sample size is not enough, the towel under which the habit is used is cleaner and only has reference value. Although in the experiment, there are differences in the degree of "dirty" of towels under different usage habits, but on the whole, the number of bacteria and fungi of these kinds of towels is very high, and the total number reaches more than one million, so the towels are disinfected regularly. It is important to reduce the growth of bacteria.
Know it
How is the towel made?
Towel is a woven fabric with a loop structure formed by interlacing three threads of ground, weft and wool. The towels on the market are mostly woven towels. The towels include face towels, bath towels, sofa towels and felt towels. and many more. With the improvement of towel fabrics and textile technology, the towels have the advantages of high water absorption, strong decontamination ability, easy cleaning and no fading.
In general, dark towels cost more than lighter towels, but lighter towels are more durable than darker ones; wet towels are more susceptible to damage than dry towels and are more prone to bacteria.
Usually sterilize the towel? Use disinfectant or exposure
The reporter learned from the Provincial Center for Disease Control that unfamiliar towel use habits can easily lead to skin allergies and inflammation. In life, we can disinfect in several ways:
Exposure: first wash with detergent, rinse it and expose it to the sun for more than 2 hours. Disinfectant disinfection: Dilute the 84 disinfectant 100 times with tap water, soak the towel for 20 minutes, remove it and clean it.
High temperature disinfection: the towel is cooked in a pot, and the water can be boiled for more than 5 minutes. If the towel is boiled, a proper amount of alkali can be added to increase the boiling point of the water to achieve better disinfection. Under normal circumstances, the salt is actually not disinfected. .
These three disinfection methods can achieve the purpose of disinfection, it is recommended to disinfect regularly every week.
å’‹ Let the hard towel soften? Soak in vinegar or warm water
The towel hardens after a period of time. This is because the free calcium and magnesium ions in the water are combined with the soap to form the calcium magnesium soap adhered to the towel. The accumulation of long-term dirt remains the reason why the towel hardens.
To make the towel soft, you can add 30 grams of soda ash or an appropriate amount of softener to 1.5 kilograms of water for 10 minutes. Alternatively, it can be soaked in warm water for half an hour, or diluted with vinegar water to soften the towel. If these methods still do not change the hardness of the towel, then it is time to change the towel.
Some towels become greasy after use, and the effect is not good after washing many times. At this time, soaking them in concentrated brine for a few minutes, and then washing them with water, can make the towels fresh.
How to choose a towel? Choose water absorption that does not fade
How to choose the right towel? Home textile experts say that you should try to choose towels from large supermarkets or specialty stores. Secondly, you should look at the labels when purchasing, such as product name, implementation standards, fiber content, etc. Third, you should choose softer, fluffy and flexible, clear patterns. A towel with even loops and no odor. You can also make some quality identification when purchasing and using towels, such as dripping water on a new towel. If it can be absorbed quickly, the water absorption of the towel is good. High-quality towels have a feeling of elasticity and friction when used, and the water does not fade.
How long should the towel be changed? It is best to change it once every two or three months.
The doctor reminded the public that the towel that has been used for a long time is easy to breed pathogenic bacteria such as Escherichia coli and anaerobic bacteria, which may cause diseases such as diarrhea, otitis media and oral infections. Therefore, it is recommended that you change the towel for two to three months. At the same time, experts suggest that towels should be used exclusively for personal use and should not be used interchangeably. It is best to prepare three to four towels per person in the family, wash your face, take a shower, and wipe your hands apart to maximize the health of the towel.