Drinking overnight water is the drinking habit of many people. However, two elementary school students in Beijing proved through scientific experiments that overnight water can be drunk. They will be placed in the Museum of Science and Technology of hot water for one day, two days, three days after the water and tap water samples for comparative chemical analysis, respectively, to determine the PH value, phosphate, nitrate, dissolved oxygen, chlorine, chemical oxygen consumption and other values are within the normal range, that is to say, overnight water on the human body does not have any side effects, you can drink.

Two elementary school students to do this experiment, due to their unannounced visits to a number of organs, found that an office every day to play four warm bottles of water, the next morning to pour out a bottle more. This organ a **** 62 offices, a year the water poured out of 38 tons. How many offices in Beijing, how many offices across the country, only do not drink overnight water a waste of water is a staggering figure.

Two schoolchildren with science to tell people to drink overnight water, but also put forward specific water conservation proposals: First, to be careful budgeting, drink how much water to play how much water; Second, centralized recycling, to prepare some clean containers will be drinking the leftover water to focus on the reuse of it; Third, the use of electric water heaters, drink how much to catch how much. It should be said that these suggestions are not difficult to do.

China is a country where water is scarce, but on the other hand there is a serious waste of water. Establish a sense of water conservation, effective use of limited water resources, to eliminate all waste of water resources is directly related to the future survival and development of our nation's big problems. In the face of the "scientific" advice of two elementary school students, all adults should not do better?

The AQSIQ said that repeated heating of water may not be harmful

February 22, Zhejiang Cixi Prayer Hei appliances limited company in Beijing, a conference, the company's marketing director Fang Shuguang exploded two major shocked everyone in the industry, "shady": the domestic use of as much as 99.3% of the hot gall bladder water dispenser "All toxic"; traditional water dispenser is the "invisible champion" of power consumption in all household appliances. The news immediately triggered a huge market reaction. So, consumers at home water dispenser is "poison maker"? Experts on the "toxic theory" how to judge? The reporter investigated the matter.

●●Core event: "There is a hot water dispenser all poisonous"

A 99.3% of the water dispenser poisonous news immediately triggered a huge reaction in the market. Is this true or is there something else going on? Reporters on the water dispenser is toxic to carry out related investigations. February 22, Zhejiang Cixi Prayer Hei Electrical Appliances Co., Ltd. in Beijing, a conference, the company's marketing director Fang Shuguang exploded two major shocked everyone in the industry, "shady": the domestic use of as much as 99.3% of the hot gall bladder water dispenser "All toxic"; traditional water dispensers are the "invisible champion" of power consumption in all household appliances.

Fang Shuguang believes that 99.3% of the water dispensers currently in use in domestic households are of the type that has congenital defects in design and construction, and are unhealthy.

Particularly noteworthy is that there is a gall bladder water dispenser "drinking water in the hot gall bladder is repeatedly 'heated-cooled-heated again' after the formation of a 'thousand-roll water '" Fang Shuguang's reasoning is: "Thousand rolls of water, although it seems clean, but heavy metals, arsenic compounds and other harmful substances in the concentrate, long drinking will interfere with the human gastrointestinal function, diarrhea, abdominal distension."

At the conference site, Fang Shuguang cited a test report issued by a national environmental testing department. The report shows that the traditional water dispenser liner for more than 3 months without cleaning, will breed a lot of bacteria, residue and even red worms, attached to the inner wall of the hot water liner to become a drinking water toxic "additives". Dissolved into this "additive" water into the human body, will cause digestive, neurological, urinary and hematopoietic system lesions, and even cause premature aging.

Are most water fountains on the market toxic? Consumers home water dispenser is "poison maker"? Experts on the "toxic theory" how to judge? When the reporter interviewed the parties involved in the relevant issues, but unexpectedly got a different answer.

●Three questions: "toxic theory" is suspected of speculation

Question one: 99.3% of the water dispenser toxic data from where?

Zhejiang Cixi Prayer Hei Electrical Appliance Co., Ltd. marketing director Chen Licheng told reporters that this data is based on the market sales statistics. Currently on the market, including the company, only 0.7% of manufacturers produce gall bladderless water dispenser, the vast majority of manufacturers are producing gall bladder water dispenser, so there is a "99.3% of the water dispenser is toxic," the conclusion.

Zhejiang Cixi Prayer Hei Electrical Appliances Co., Ltd. marketing director Fang Shuguang said, the reason for throwing out 99.3% of the data just to show that the gall bladder water dispenser if more than 3 months without cleaning will breed bacteria, resulting in secondary pollution.

At present, there are only two enterprises producing gallbladderless water dispensers in China. "Such data is only the result of the survey in the Ningbo market. According to the survey, 3 months without cleaning the inner liner, the inside is very dirty, and this scale is harmful to the human body. Probably only 0.7% of gallbladderless water dispensers on the market do not need to be cleaned. Gallbladderless water dispenser is negligible limescale problem."

Question 2: Is gallbladderless completely free of limescale?

According to Fang Shuguang, usually the drinking water in the water dispenser is divided into mineral water and pure water. Mineral water in the case of high water temperature is easy to produce scale. In the gall bladder water dispenser repeatedly heated "thousand rolls of water", the phenomenon of limescale can not be avoided. And this problem can not be avoided gall bladderless water dispenser, but the phenomenon of scale is not obvious, even if there is the formation of a long time, perhaps two or three years.

Question three: "toxic theory" is hype?

In response to the question of whether the toxic theory belongs to the vicious speculation, Fang Shuguang believes that the emergence of gallbladder-free water dispenser lies in the discovery of a good program, and the problems related to water health has been plaguing water dispenser manufacturers. "Now we have the responsibility to explain this issue to consumers and hopefully make them drink healthy water. I don't think it's bad hype. We also hope to cooperate with traditional water dispenser producers in this regard," Fang Shuguang said.

Eight kinds of water you can't drink

There are different ways of saying whether water fountains are toxic, but regardless of what's right or wrong, we need to drink healthy water, and remember that you can't drink any of the eight kinds of water.

Raw water: the chlorine in tap water can interact with the residual organic matter in the water that is not boiled, which can easily lead to bladder cancer, rectal cancer; raw water in the wild contains harmful bacteria, viruses and parasites, drinking, easy to get acute gastroenteritis, hepatitis, typhoid fever, dysentery and parasitic infections.

Non-boiled water: drinking unboiled water, the possibility of bladder cancer, rectal cancer increased by 21% -38%; when the water temperature reaches 100 degrees Celsius, the harmful substances will be evaporated with the steam and greatly reduced, such as continue to boil for 3 minutes, it is much safer to drink.

Re-boiled water: boiled water re-boiled, it will make the water nitrite content exceeds the standard, causing damage to the human body, over time can also cause cancer.

Water in the air for a long time: cool water can not be exposed in the air for too long, otherwise it will lose biological activity, thus losing many special features; if the time is too long, not only the absence of a variety of minerals, but also may increase the content of certain harmful substances.

Overnight water: Boiled water held in a thermos bottle that is not the same day, similar to water that has been in the air for a long time.

Aging water: that is, a long time to store water, often drink this water, will make the minor cell metabolism slows down significantly, affecting growth and development; middle-aged and elderly people to accelerate aging; resulting in esophageal cancer, gastric cancer incidence is increasing.

Thousand rolls of water: Thousand rolls of water is boiling on the stove overnight or for a long time of boiling water, as well as electric water heaters in the repeated boiling of water. Drinking this kind of water for a long time will interfere with one's gastrointestinal function, and temporary diarrhea and bloating will occur.

Steamer water: Steamer water is the boiling water left at the bottom of the pot of steamed bread and rice and other food. Drinking this water often, or with this water boiled rice, will cause nitrite poisoning, scale often with the water into the human body, will cause digestive, neurological, urinary and hematopoietic system lesions, and even cause premature aging.

●authoritative statement -- AQSIQ: repeated heating may not be harmful

For the current widespread concern about the quality and safety of domestic water dispensers, the AQSIQ said that China's national standards for water dispensers and other stainless steel containers and other products, health indicators, electrical safety indicators are Corresponding provisions. AQSIQ will increase the drinking fountains and other stainless steel utensils national supervision and sampling efforts.

On the quality of stainless steel water dispenser liner, the relevant person in charge of the AQSIQ pointed out that, from the analysis of the working principle of water dispensers equipped with stainless steel liner, the water inside the water dispenser is repeatedly heated, but can not be assumed that the inner liner of the water dispenser will produce heavy metals, arsenic compounds and other harmful substances. Through testing in line with the national standard requirements of stainless steel liner is safe.

●Expert opinion: "toxic theory" unfounded

China Household Electrical Appliances Association Deputy Secretary General Wang Lei:

China Household Electrical Appliances Association Deputy Secretary General Wang Lei said in an interview with the reporter, he participated in the company's new product launch is to support the technology of the new product, but does not agree with the so-called water dispenser "toxic theory". "As a company, they can publish the right and wrong theories about gallbladderless and gallbladdered, but in the spirit of consumer responsibility, the water dispenser 'toxic theory' lacks scientific basis. So far, I personally have not heard of anyone drinking water from a water dispenser because of poisoning," Wang Lei told reporters.

In Wang Lei's view, gall bladderless water dispenser not only enriches the variety of water dispensers, but also avoids the use of gall bladder water dispensers to produce some problems, such as "a thousand rolls of water". But "in places with high water consumption, one or two days to drink a bucket of water units, gallbladder drinking fountains should not have these problems.

Is it true that gallbladderless water fountains are perfect? Wang Lei also questioned, "Gutless water fountains cannot produce ice water. In addition, the use of gall bladder water dispenser scale are knotted on the surface of the liner, then, gall bladderless water dispenser scale where? Especially in the northern region where scale formation is more powerful, how gallbladderless water dispensers can solve the limescale problem deserves our attention."

China Medical Promotion Association Healthy Drinking Water Professional Committee Director Li Fuxing:

Allegedly at the scene at the time to support gallbladder-free drinking fountains, China Medical Promotion Association Healthy Drinking Water Professional Committee Director Li Fuxing in an interview with reporters emphasized that the "thousand rolls of water" contains heavy metals and other harmful substances of the language of the judgment itself "did not say that at all".

According to Li Fuxing, at the conference held on the same day, he focused on the issue of secondary pollution of drinking fountains. "Any science and technology has a double-edged nature, the main problem of drinking fountains is the existence of secondary pollution. We have done the test, drinking fountains in the cool water remaining seven or eight days when there is an odor produced. Therefore, the most common approach is the water dispenser should be as far as possible to avoid light". According to Li Fuxing, "I don't think there is a scientific basis for the toxic theory. Now all the water dispenser manufacturers are seeking to solve the problem of secondary pollution. An effective way is to clean the water dispenser frequently."

●Interview notes: do not forget to read the instruction manual

Reporters also found in the interview, the regular water dispenser manufacturer's product manuals are labeled, water dispensers should be cleaned after 3-6 months of use, at the same time, the regular water dispenser manufacturers basically provide door-to-door for customers to clean the business.

But the concern is that many consumers buy water dispensers rarely check the product manual. Not only water dispensers, perhaps many home appliances, consumers in the purchase of home rarely look at the instruction manual. In people increasingly concerned about the quality of life is healthy today, in the use of home appliances, consumers should also carefully check for their own convenience "product manual"?