Stainless steel thermos cup has become a necessity in our life, whether you are a front-line employee in the workshop or a star of the red ball, stainless steel thermos cup you will use, but the choice of product price is not the same. The price is different, so the quality of the thermos cup is certainly not the same, today we take a look at the quality of stainless steel thermos cup how to identify:
How to distinguish the quality of stainless steel vacuum cup
First stainless steel material simple identification method: a lot of stainless steel material specifications, including 18/8 stainless steel material composition containing 18% chromium, containing 8% nickel, to achieve this standard of materials, in line with the national 304 standard is green environmental protection products, products rust, corrosion resistance. Ordinary stainless steel cup body color appears white and dark, if put into the concentration of 1% salt water soaked for 24 hours will produce rust spots, the elements contained in part exceed the standard, direct harm to human health.
Secondly, the capacity size is simple to identify: the depth of the liner and the height of the shell is basically the same, (16-18mm) capacity and nominal value consistent. Some low-quality thermos are filled with sand and cement blocks to make up for the missing weight. Myth: A heavier cup (pot) is not necessarily better.
Again is the plastic accessories identification: 304 new plastic is characterized by small smell, bright surface, no burr, long service life is not easy to aging. Ordinary plastic or recycled plastic is characterized by large smell, dark color, burr, plastic aging easy to break.
Simple identification method: Pour the boiled water into the vacuum cup and tighten the stopper or lid clockwise for 2-3 minutes, then touch the outer surface of the cup body with your hand. If the vacuum cup body has obvious warm phenomenon, it indicates that the product has lost vacuum degree and can not achieve good heat preservation effect. Sealing performance identification method: after adding water to the cup, tighten the bottle stopper and lid clockwise, put the cup flat on the table, there should be no water leakage; There should be no gap between the lid and the rim of the cup.