1. Sealing performance identification method: After adding water to the cup (pot), screw the bottle stopper or lid in a clockwise direction, and place the cup (pot) on the table top, and it should not leak out; the cup (pot) lid and cup The screwing in and out of the mouth should be flexible and free of gaps. Fill it with a glass of water for four or five minutes, or use a few squats to verify that it is leaking.
2, bio-based lunch box insulation performance simple identification method: pour boiling water into the thermos cup clockwise tighten the cork or lid for 2-3 minutes, then touch the outer surface of the cup by hand, if the cup (pot) body has obvious The warming phenomenon, especially the lower part of the cup, indicates that the product has lost the vacuum and cannot achieve a good thermal insulation effect, while the lower part of the insulated cup is always cool. Misunderstanding: Someone uses their ears to hear if they have a sizzling sound to determine their thermal insulation performance. The ear can't hear whether it is vacuum.
3, plastic parts identification method: food-grade new plastic features: small smell, bright surface, no burrs, long service life is not easy to age. The characteristics of ordinary plastics or recycled plastics: large smell, dark color, many burrs, and easy aging of plastics. This will not only affect the service life, but also affect the sanitation of drinking water.
4. Check the accessories such as the label of the cup. Look for the name, capacity, caliber, manufacturer's name and site, the standard number used, the method of use, and precautions in use. A manufacturer who attaches importance to quality will strictly demonstrate the performance of its products in accordance with the relevant national standards.
5, stainless steel material simple identification method: stainless steel material specifications, 18/8 means that this stainless steel material contains 18% chromium, 8% nickel, material that meets this standard, in line with national food-grade standards is green environmental protection products, product anti-rust, preservative. Ordinary stainless steel cup (pot) body color appears white or dark, if placed in a concentration of 1% salt water for 24 hours, it will produce rust spots, and some of its elements exceed the standard, directly endangering human health.
6, the appearance of the cup identification method. Look at whether the surface of the liner and the outer liner is evenly polished, whether there is any bruises or scratches; secondly, whether the mouth welding is smooth and consistent, which is related to whether the feeling of drinking water is comfortable; thirdly, whether the internal seal is tight, Whether the screw plug and the cup body match; four look at the cup mouth, the more round the better.
7. Simple capacity identification method: the depth of the inner liner is basically the same as the height of the outer casing. The difference between the capacity and the nominal value is consistent with the nominal value. Some brands add weight to the missing material in order to cut the weight of the material and add it to the cup (pot). Sand, cement blocks. Myth: The weight of the cup (pot) is not necessarily good.
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