2. If it is 304 or 3 16 stainless steel, it is not toxic; If it is 20 1 or 202 stainless steel, it is harmful to human body, because 20 1 and 202 are easy to produce iron oxide, that is, rust, which has toxic and side effects on human liver.
3, stainless steel cup itself is non-toxic, but its inner surface is rough, easy to accumulate tea scale, scale and other stolen goods, attention should be paid to frequent cleaning.
4. Stainless steel is a "slightly toxic" material, and the use of general stainless steel tableware has little impact on the human body. However, as drinking cups, the most hygienic and safest are porcelain cups and glasses. The former is durable, while the latter is fragile, and each has its own advantages and disadvantages.
Can stainless steel cups make tea? Stainless steel cups are not suitable for making tea.
Stainless steel cups contain chromium, which is a heavy metal. Corroded stainless steel cups will be released because the protective film is destroyed, which will cause harm to human body if they continue to be used. Stainless steel cups are best not to be used for making tea. Moreover, it is best not to use stainless steel vessels to hold oil, salt, sauce and vinegar.
3 How to choose stainless steel thermos 1 and stainless steel thermos with superior material? Generally, food-grade 304 stainless steel will be used in the inner and outer containers, and at least 304 stainless steel should be used in the inner container of the thermos to ensure that the heavy metal dissolution of the thermos for water holding does not exceed the standard, including the lead content.
2. Insulation effect Under the condition of room temperature of 20 degrees, add boiling water above 95 degrees to the stainless steel thermos cup and cover it for 6 hours. The water temperature of the cup with a capacity of less than 400ml is not lower than 42 degrees, and the water temperature of the cup with a capacity of more than 400ml and less than 600ml is not lower than 54 degrees.
3. The stylish appearance and individual appearance of thermos cups are naturally the main factors to attract consumers to buy.
4, the lid of the thermos cup A good stainless steel thermos cup should be quite smooth and flat when screwed up, and the strength of 360-degree rotation is even.