Every time I buy a new cup, I feel very happy to drink water for those two days.
While paying attention to the color value of the cup, many people actually asked Dr. Clove-
Is it healthier to drink water from what cups?
How can my cup smell when I drink it?
Is using the wrong cup really equivalent to drinking poison?
It is true that the water cup is exquisite, but it will not easily [exude harmful substances]. Today, Dr. Clove will talk to you about how to choose a cup that makes you like from all kinds of kinds.
From the point of view of safety, glasses may be the best choice. It basically does not seep out harmful substances and can be filled with water at different temperatures.
Moreover, the glass is slippery and easy to wash. Yan value is also high, take it to drink water, inexplicably have a sense of ceremony.
However, glasses also have some shortcomings: they are fragile and will break into slag if they are not careful.
Therefore, if you go out or have Xiong Haizi at home, the glass is like a Marisol-style hostess and cannot be touched.
Stainless steel cup
The concern about stainless steel cups is that they may have chromium, manganese and other metals seeping out.
There are many kinds of stainless steel, which need to be briefly classified and discussed.
1. Food grade stainless steel
Better stainless steel cups will use food-grade stainless steel. Even if they are soaked in quite strong acid for a long time in standard tests, the amount of chromium, manganese and other metals seeped out can be ignored.
However, we usually only use it to contain water, tea, coffee, fruit juice and so on, which is much milder than the test conditions, and there is no need to worry about [seeping out harmful metals].
2. High manganese steel
Some stainless steel cups will use [high manganese steel]. High manganese steel may seep out more manganese, which is also the reason why rumors about stainless steel cups are rife among friends.
In fact, manganese is a trace element needed by the human body, [excessive] is harmful, and one cannot play rascal casually.
However, the fact is that even the reported [excessive] manganese precipitation only accounts for a small part of the normal manganese intake of the human body and will not affect health.
If you really want to say [stains] on stainless steel cups, there are also.
Expensive, especially food grade stainless steel cups.
Of course, there are also inexpensive ones, such as single-layer stainless steel cups, but the heat insulation effect is poor. However, those with good heat insulation effect, such as double-layer stainless steel cups, are more expensive.
Poverty makes the choice simple.
Some ceramic cups have patterns on the inner wall, and people are worried that the pigments of these patterns may contain heavy metals such as lead.
These patterns are technically divided into [underglaze color] [overglaze color].
1. Underglaze color
The ceramic is painted first, then fired at high temperature, and finally the pigment is covered by glaze.
It looks like there is a pattern, but it feels smooth and does not lose points!
In such ceramic cups, heavy metals in pigments are difficult to seep out, so don’t worry.
Step 2: Overglaze
The glaze is formed first, then colored, then fired at low temperature, and the pigment is on the surface of the glaze.
Not only does it look like a pattern, but it also feels 3D.
Such ceramic cups, the heavy metals in the pigment are easier to seep out.
So, in a nutshell-
- If there is no colored glaze on the inner wall, it is similar to a glass in safety. There is glaze color on the inner wall, but the pigment is in the inner layer of glaze, and the inner wall is smooth, so the problem is not big. If there is glaze color on the inner wall and the pigment is on the glaze surface, there is a risk of heavy metals such as lead seeping out…
Enamel cups are actually metal cups covered with a layer of porcelain, which are used more by the older generation.
Because the calcination temperature is low and the porcelain formed is not stable enough, when the enamel cup comes into contact with food (especially acidic food), harmful metals will seep out.
Moreover, after the surface porcelain is damaged, the heavy metals hidden under the porcelain will seep out more easily.
In addition, enamel cups do not fall.
Imitation porcelain cup
The so-called imitation porcelain cup is the kind of cup that looks like ceramic cup at first sight, but the actual material is plastic. Imitation porcelain is lighter than glass and ceramic, and is not easy to break, suitable for children.
But people are more worried that melamine and formaldehyde may seep out of porcelain-like materials?
The real imitation porcelain material is called [melamine resin], of which the exudation of melamine and formaldehyde is very low, so don’t worry.
What needs to be worried about is the [inferior porcelain-like tableware] on the market.
These inferior products will be mixed with [urea-formaldehyde resin] or other melamine powder (such as A1 and A3 melamine powder). A5 melamine powder is the pure melamine resin, and the porcelain-like tableware made from it is safe.
Then the question arises… … …
How do I know which is true and which is false?
There is a simple way: 100% melamine resin is more expensive, so the real imitation porcelain tableware is not cheap!
There are many kinds of plastics, good or bad.
Dr. Clove recommends a simple and crude selection method here:
- Indicated [microwave heating], safe, usable; Unspecified, [Conservative] Use: Don’t hold water for too long in what, especially acidic beverages and hotter water. In addition, if plastic cups are not washed clean, bacteria are more likely to breed.
The appearance of paper cups is to avoid potential safety hazards caused by cross-use of cups.
There is no obvious potential safety hazard in paper cups themselves, but as a simple and cheap product, its quality monitoring is not necessarily guaranteed.
In addition, paper cups can only be buried or burned, which is not environmentally friendly.
- Standing at home, for drinking water and drinks: glasses, stainless steel cups, ceramic cups without colored glaze on the inner wall surface, melamine resin imitation porcelain cups; Carry out: double stainless steel thermos cup; Can be used, but is not recommended for common use: ceramic cups with glaze color on the inner wall surface, enamel cups, cheap imitation porcelain cups, and plastic cups that can be heated by microwave; Use only in public places or parties: plastic cups, paper cups.
Did you choose the right cup?