The double glass cup cup has a wide range of uses, not only for making tea, but also for holding hot water, beverages, etc. Of course, it also has many other uses, so it is loved by many people. However, with the popularity of products, some inferior products are gradually appearing on the market. If they are used for a long time, they may also affect health problems. Therefore, when choosing double glass cup, you should pay attention to it and master some selection techniques.

1. Look at the label or manual of the double glass cup first.

Generally, regular manufacturers will have detailed information about the product model, name, volume, material, production address, manufacturer, standard number, after-sales service, usage method, and so on. If none of these are present, there is a problem with this cup.

2. Identify from the appearance of the double glass cup.

(1) Check whether the surface of the inner tank and the outer tank is uniformly polished, and whether there are bruises, scratches or burrs.
(2) Check whether the mouth welding is smooth and consistent, which is related to whether you feel comfortable when drinking water.
(3) Check whether the internal seal is tight and whether the screw plug and the cup match.
(4) Look at the mouth of the cup, the rounder the better, the immature craftsmanship will appear out of round.

3. Check the airtightness of the double glass cup.

First twist the lid to see if the lid fits perfectly with the body of the cup, then add boiling water to the cup, and then turn the quilt upside down for two to three minutes to see if any water leaks out.

4. Detect the thermal insulation of double glass cup.

Because the stainless steel vacuum insulation cup adopts vacuum heat insulation technology, it can prevent heat from being transferred to the outside under vacuum, so as to achieve the effect of heat preservation. So to check the heat preservation effect of the thermos cup, you only need to pour boiling water into the cup, wait for two to three minutes, touch each part of the cup with your hand, and feel the heat. If there is heat in any part of the cup, it indicates the temperature Will be lost from that place. However, there is generally a slight heat in the area like the mouth of the cup, which is normal.

5. Identification of other plastic parts.

The plastic used in the double glass cup should be food grade. This plastic has the characteristics of low odor, bright surface, no burrs, long service life and not easy to aging. The characteristics of ordinary plastics or recycled plastics are big smell, dark color, many burrs, plastics are easy to age and break easily, and they will smell bad for a long time. This will not only shorten the life span of the cup, but also pose a threat to our own health.

6. Detection of double glass cup capacity.

Because the thermos cups are made of double glass cup, the actual capacity of the thermos cups will be different from what we have seen. The first thing to look at is whether the depth of the inner layer and the height of the outer layer of the thermos cup are not much different, because many small factories often start with materials in order to reduce costs. Therefore, this is likely to affect the capacity of the cup.