Sometimes guests come, and there are not so many water cups at home, so we can only pour water into disposable cups for the guests to drink. Those cups are OK for cold water and drinks, but if they are filled with hot water, they are easily deformed by being scalded, and the people who drink the water are also Will there be concerns about whether toxic substances will be produced that will harm health? What kind of cup is better to use when drinking water?
Are disposable plastic cups safe? Let’s take a look at the random inspection results
Everyone must have used plastic cups. They will prepare some at home for guests to use. They usually provide this kind of cup when going to public places such as stations and hospitals. Is this kind of cup that becomes soft when squeezed with a little force qualified?
The Shanghai Municipal Administration for Market Regulation announced the sampling results of 70 batches of disposable plastic cups. The test items were mainly Escherichia coli , pathogenic bacteria, mold, temperature resistance, total migration, heavy metals and other items.
Sampling inspection found that 48 batches of were unqualified, including load-bearing performance, label identification, etc. There were no cases of mold or heavy metal exceeding the standard.
However, if the material of the plastic product is poor, it may release chemicals after filling with hot water. Long-term intake will increase health risks. When using it, you should check whether there is a "PP5" mark on the bottom of the cup. It is relatively safe and can withstand high temperatures. If it is a PS6, it can generally only be used to hold drinks, cold water, and warm water.
Glass cup, thermos cup, paper cup, stainless steel cup, which one is better?
Glass tumblers
are relatively safe, relatively stable when exposed to hot water, and easy to clean. They are suitable for holding water for drinking. Even if they are used to hold fruit juices and vegetable juices, will not stain . However, the cost of glass is relatively low and the process is simple, so some small businesses will sell inferior products.
When you buy a cup, you should pay attention to the thickness of the cup. The thicker the cup, the more heat-resistant it is, but it is also heavier. At the same time, you also need to check whether its surface is smooth. If there are small particles on the surface, it means the workmanship is rough and it is an inferior product.
If you find that the glass has cracks, it is best not to continue using it to prevent it from being scalded by hot water and bursting, causing personal injury. When using the cup for the first time, you can wash it with a small amount of hot water to let it adapt to the temperature, and then use it normally.
The thermos cup
can be said to be a must-have item in winter, and it is also a good friend for people with dysmenorrhea and cold people. The advantage of the thermos cup is obvious, that is, it can maintain the temperature of the water within a certain period of time, whether it is hot or cold. And there is a shell on the outside, so it won't burn your hands even if you pour boiling water on it. It's so comfortable to open the cup when it's cold and feel its heat and temperature.
There are generally two points to consider when choosing a thermos cup. One is the thermal insulation performance, and the other is the material. Pay attention to whether the cup lid is tightly closed and whether it is sealed. If there is water or air leakage, it means the thermal insulation effect is poor. The material is preferably 304/316 , which is not easy to migrate heavy metals and is not easy to be corroded.
reminds everyone not to soak wolfberry, longan , jujube, etc. in a thermos cup for a long time. It is easy to produce a lot of gas, which may pop up and hurt your eyes when you open the lid. The price of thermos cups can range from high to low. Try to choose reliable manufacturers and brands and don’t be cheap.
Paper cups
Generally, milk tea shops and fast food restaurants use this kind of cup. The material is hard and there is a film inside, . The waxed paper cup is used to hold cold drinks and ice cream, while the coated paper cup can hold coffee. When you use it, you should pay attention to whether it is a waxed paper cup or an coated paper cup. Don't use the wrong one.
White cardboard cups are not suitable for holding liquids. They are mainly used to hold dry food. They are soft to the touch and will deform with a gentle squeeze. If you use this kind of cup to pour water, it is easy to spill and burn.If you are using paper cups at home, it is better to choose coated paper cups, which are strong and safe.
Stainless steel cup
is different from the thermos cup mentioned above. It does not have a heat preservation function. It has a handle or a lid. Its heat preservation ability is stronger than that of glass cups and paper cups. Because it is resistant to falling and corrosion, it is more popular among people. It is often seen in many places, especially in kindergartens and other places.
As long as you choose 304/316 material, it has little impact on health. The amount of heavy metal migration is below the safety limit and it is easy to clean.
Can you still drink the water in the cup after overnight?
The answer is that it can be drunk. I will analyze it from the perspectives of bacteria and carcinogens. First of all, boiled water is boiled. The high temperature will kill the bacteria in the water and the disinfectant ingredients will also evaporate. The remaining ingredients are very safe and can be consumed with confidence. As long as you don't live in a place full of bacteria or have a very sensitive stomach, drinking water overnight is generally not a problem.
But everyone should remember that the longer the lid is left open, the easier it is for bacteria to enter the cup. It is better to drink it as early as possible. Among them, nitrite is found in the water itself. The content of does not change significantly after one night. will not cause poisoning after drinking it.
If you want to reach the carcinogenic level, you have to drink several tons of water. If you do that, your kidneys and heart may not be poisoned yet, and our kidneys and hearts will stop working first. Instead of worrying about the poisonous water left overnight, you might as well take the time to wash the tea stain in the cup.
How to clean the tea stains in the cup?
People who like to drink coffee, tea, and juice often have obvious tea scale in their cups, which looks dirty and affects human health.
You can pour some hot water and white vinegar into the cup to let the acid corrode the tea stains. Wait for more than ten minutes to clean it. If it is made of glass, ceramics and other materials, you can directly use steel wool to brush it. If it is a disposable paper cup, just throw it away. If you don’t want too much tea stains, you should rinse it promptly after each drink. Don’t be lazy.
No matter what the material of the cup is, as long as you buy a qualified product, it will generally not produce harmful substances. However, if you buy a very cheap product, the material is soft and the color is bright, and it will smell obviously strange. There may be a risk of excessive heavy metals, so don’t use it. Autumn is here and the weather is getting drier. Hurry up and choose your own water bottle and start replenishing water!
Reference:
[1] Can you drink water overnight? · Chinese Academy of Sciences China Popular Science Expo.2019-08-28
[2] Market Supervision Public Welfare Lecture - For cold and hot drinks and ice cream, the purpose of paper cups should be clearly distinguished·Voice of Hubei.2021-02-05
[3] Disposable tableware Is it hygienic? Is it safe? The random inspection results will tell you→·Shangguan News.2020-08-21
[4] If you choose the wrong water cup, drinking water will be dangerous! Which of the six types of water cups is better? Beijing TV I am a great doctor. 2018-12-18
