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It mainly depends on your storage conditions. Generally, if the water in the bucket is exposed to direct sunlight, it is easy to spoil. If it doesn't deteriorate, of course you can drink it, and the water from the mother's water cellar in the northwest will be kept for a year.
In fact, according to the relevant research results, there is a shelf life when the barrel is bottled. This shelf life cannot exceed a maximum of 20 days.
Expert: "From the current survey, there are generally two microbial indicators for measuring drinking water, one is the total number of colonies, one is the total number of coliform bacteria, generally speaking, the coliform bacteria or most of the cases are qualified, the main problem is that the total number of colonies exceeds the standard, and the total number of colonies exceeds the standard with the longer you use it, the more serious the excess will be, at present, so many people use bottled water, the problem we pay attention to is that I am using the use cycle of this bottled water, as short as possible, the better, It's just that this bucket of water should not be used for too long, half a month or a month. ”
At present, there are clear criteria for the total number of colonies and coliform bacteria in the bottled water of the national team. Due to the defects in the structure of the water dispenser, once the tank is opened, the water comes into contact with the air. The vast majority of water dispensers do not have a disinfection filter device in the air inlet.
Some airborne microorganisms and dust enter the water tank from the air intake air, thus causing pollution of the drinking fountain. Therefore, we should not drink bottled water for too long. If you haven't drunk it for more than 20 days, you should not drink the rest of the water and must dispose of it.
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Plain water overnight or left for a long time is not a question of whether it can be drunk. It's a question of whether it's good or not. If the water is left for a long time, it will breed some bad substances, and drinking it is not good for the body.
It's better not to drink it. Fresh boiled water, boiled and drunk, is not only sterile, but also contains a variety of minerals needed by the body. Do not drink water that has been left out for too long, do not drink boiled water that has been reboiled overnight in an automatic water heater, do not drink boiled water that has been boiled many times, and do not drink water that has been stored in a thermos flask that is no longer the same day, or water from a steamer that has been steamed.
Although these "stale waters" are sterile, they cook out the minerals that the body needs, and may also contain some harmful substances, such as nitrites. Incidents of nitrite poisoning resulting from this are not uncommon.
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See how you saved it. The shelf life of water is not long, and if it is not in a sealed state, it is best not to drink water with an ambient temperature greater than 20 degrees for 3 days. The water in the general pure water bucket is fine for a week in winter, and it is best to drink it within 5 days in summer.
If the time is relatively long and there is a lot of water left, it is recommended to boil it and drink it.
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According to my own experience, I once drank water from a pure bucket (boiled) that had not been touched for 7 days, and it tasted weird, a little astringent and smelly. Then you have diarrhea, so if you trust your stomach. You can drink it, but I advise you not to drink it!
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It's better not to drink, if you don't have any doubts about that in your heart, how can you ask this question? Since you put it forward, it means that you still have some scruples in your heart, since you are not at ease, then don't drink it, believe that you are.
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It's best not to drink it anymore.
Over time, bacteria grow.
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Theoretically, boiling water will cool to 32 degrees Celsius, and after 4 hours, it will become the same as unboiled water.
However, it is better not to drink water that has been left out for so long unless absolutely necessary.
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The shelf life of sealed mineral water was originally 3 months, but now it has been changed to 1 month.
After opening, it should be used up within 1 to 2 weeks.
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How do you keep it? If sealed can drink. Don't drink anything else.
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Bottled water is generally labeled with a shelf life of 3 months, but this is when left unopened. If opened, it can be drunk for up to 15 days.
It is understood that if the opened bottled water is left for more than half a month, although the taste has not changed, the bacteria have exceeded the standard.
Bottled water is highly purified at the time of production and delivery, generally through.
The quality of QS-certified bottled water can pass, but if the bottled water is opened for more than 15 days, the bacteria in the water will multiply rapidly and cause diarrhea.
Caution: Prevent secondary contamination.
The secondary pollution of bottled water refers to the contact of water with bacteria after opening, which are mainly used in hands, cups, and water dispensers. If your hand touches the seal of the bottled water, it is easy to leave bacteria on the mouth of the bucket; Bacteria can also remain when the cup is not cleaned often; Water dispensers are the most likely to breed bacteria, because the barrel neck of bottled water is placed upside down on the water dispenser, and various impurities and minerals in the water will precipitate into the inner tank of the water dispenser.
Some experts have tested that the colony index of water in the water dispenser was 0 on the first day, and after 10 days, the total number of bacteria rose to 8,000 per milliliter, while the national standard stipulates 50 per milliliter. If the water storage time of the inner tank is too long, it can also multiply and breed bacteria and viruses, sediment residues, heavy metals, and even bloodworms. If you drink such water, there will be problems with both the digestive system and the urinary system.
Water dispensers are disinfected every six months.
Relevant experts said that the general household water dispenser should be disinfected once after about 6 months of use. The water dispenser should be cleaned frequently when in use.
When cleaning, you can use the professional cleaning tablets equipped by the water dispenser manufacturer, first put the tablets in the water dispenser filled with water, gently shake the water dispenser, put the water out in about 10 minutes, and then put in about two kilograms of water, clean again, and finally completely discharge the water in the water dispenser.
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Bottled water can generally be drunk for about a week, but it is best to drink it as soon as possible, after a long time, it is not good after all.
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Don't drink bottled water for too long, generally about three days, and the longest should not exceed a week, there are bacteria for a long time, which is not good for your health.
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How many days does bottled water last? If the bottled water is not opened, it can be left for two more days, if it is opened, it can be drunk for three days, five days is fine, not for too long, if it is too long, do not drink it.
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15 days. The shelf life of unsealed bottled water is around 15 days. When unopened, the shelf life is 1-3 months. Although there is no obvious change in the taste of unsealed bottled water for more than 15 days, the bacterial content in the bottled water has exceeded the standard, and it is easy to cause diarrhea if drunk in large quantities.
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Hello, this should be calculated according to the amount of water and water used, some people will use bottled water for cooking, so it will be used quickly, if you just drink water alone, it will probably take more than ten days.
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In general, bottled water can be used within 7 to 15 days. In the summer, the time should be shorter, and in the winter, the time should be longer!
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As long as it is sealed and does not leak, it usually takes about a week, anyway, my bottled water is to drink for a week, and it will be drunk in this way.
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It is better to use the bottled water as much as possible after opening, and it is generally used up within three days in winter, and it is best to use it in about one day in summer.
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Once the water is opened, it should be drunk within a week, and the infusion. The shelf life of the summer is more again. And pay attention to the shelf life of winter, summer, summer and summer more than three, and pay attention to the shelf life of winter, summer, summer, summer is shorter, it is best to drink it in three years at most, and it is best to drink it in the year within three years, because it is easy to grow after a long time, and it is easy to breed bacteria.
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It is better to drink bottled water within 15 days after opening, and do not leave it for too long.
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If it's too long, it won't be much good for the body, so don't take more than a week, so we have to get rid of a bucket of water within a week.
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Bottled water can generally be drunk for 3,000 to 4,000 yuan, and if it takes too long, it will. There is hope for bacterial growth.
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Maybe a few days, just without my sister-in-law, it may take a week or a little more or less.
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Bottled water generally has an expiration date, if it is a person, it is recommended to buy a small bottled water, and drink medicine within the expiration date.
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Unopened bottled water can be left for about three months, and the shelf life of bottled water after opening is only about 15 days, and it is best to drink it within a week, so as to ensure the quality of the water. Water is the source of life, but also an indispensable drinking supplies in life, whether it is a family or a company will use bottled water, just bought back bottled water is sealed, so as to prevent bacteria from entering the barrel to affect the water quality, after the bottled water is opened, the water is in contact with the air, and it is easy to breed bacteria during use. Due to the defects in the structure of bottled water, once opened, microorganisms and dust in the air will enter the poke from the inlet, thus causing contamination of drinking water, if the bottled water is left for too long after opening, although the taste will not change, but the water inside will contain a large number of bacteria.
Expired bottled water cannot be drunk: after the bottled water comes into contact with various microorganisms in the air, bacteria will inevitably grow, and then it will breed in the water, and the water is easy to deteriorate after the expiration date; Especially some good bottled water, because there are many nutrients, so bacteria are also easier to breed, if it is exposed to air for a long time, it is more easy to deteriorate, and people are easy to have diarrhea after drinking.
Precautions: Many people do not drink the bottled water before going out, and continue to drink it after coming back for half a month or even longer, some people may think that it is no problem, but this is wrong, drinking this kind of water will be harmful to health; In addition, there are few people in the family, and someone drinks a bucket of water for a month, which is also not right, and it is best for everyone to drink the bottled water within half a month, otherwise they don't know the reason for drinking water and diarrhea.
Unopened or opened bottled water is obviously no longer drinkable after expiration, but it is too wasteful to pour it out, so you can wash it to wash vegetables, which is cleaner than tap water; In addition, expired bottled water can also be used to cook rice, and the high temperature will kill many bacteria in the water, making the water healthier and more delicious when cooking with it.
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1.Unopened for 2 months, 15 days after opening without chain.
2.Many bottled water sold in the market is sterilized with ozone before being bottled.
3.Ozone is a strong oxidizing agent that reacts chemically with minerals in water to produce bromate, which is harmful to humans.
4.Studies have found that bromate has carcinogenic effects on experimental animals, but its carcinogenic effect on humans is not certain.
5.As a result, bromate is classified as a substance that may be carcinogenic to humans.
6.Bottled water: refers to the pure water or mineral water processed by tap water or groundwater pumped by modern industrial technology, and the product is filled to PC barrels by the filling production line.
7.Bottled water is purified water, mineral water, and mineral water, among others.
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The shelf life is 2 months, and it can be drunk within 15 days after opening.
Many bottled water sold in the market is sterilized with ozone before being bottled. Ozone is a strong oxidizing agent, so it reacts chemically with minerals in water to produce bromate, which is harmful to the human body. It has been found that bromate has carcinogenic effects on experimental animals, but its carcinogenic effect on humans is not certain, so bromate is listed as a possible carcinogenic substance to humans.
No, the chemical properties of lithium bromide solution are similar to salt, so feel free to put it!!
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