Insulation products from the material divided into glass vacuum insulated container and stainless steel vacuum heat preservation container two kinds, the former common thermos, insulated lunchbox, glass tank vacuum cup, etc., which are mainly stainless steel vacuum cup. Regardless of the small mouth, mouth, portable, desktop type, method of choose and buy has similarities, specific alternative products according to the specific situation a little bit. Regarding the stainless steel vacuum cup and give a brief introduction of selection of the vacuum flask glass.

　　Stainless steel vacuum cup identification can adopt the following methods:

　　Simple identification method: (1) properties of insulation in the boiling water in a thermos flask clockwise to tighten the cork or lid for 2-3 minutes after touch cup outside surface, if the cup (pot) has obvious phenomenon of warm, especially the lower part of the cup body fever, that product has lost its vacuum degree, cannot achieve good insulation effect, and the thermal insulation cup bottom is always cool. Myth: someone is listening with ears have zi zi to determine the thermal insulation performance, ear is don't recognize whether the vacuum.

　　(2) the sealing property identification method: after the cup (pot) and water, according to clockwise to tighten the cork or lid, put the cup (pot) flat on the desktop, should be no water leakage; Cover cup (pot) and screwing in the screw at the top should be flexible, no gap. Filled with a cup of water to the horse, four, five minutes a few times can verify leaking or force.

　　(3) plastic parts identification method: food-grade plastic new features: small odor, surface brightness, no burr, long service life is not easy to aging. Ordinary plastic or recycled plastic characteristics: smells great, grey color, burr, plastic aging more easy to fracture. This not only affect the service life and can also affect the health of drinking water.

　　Simple identification method (4) capacity: the depth of the tank and the height of the casing, (16 to 18 mm) capacity consistent with nominal value, some domestic brands in order to cut corners, make up for the lack of material, the weight of the sand, concrete is added in the cup (pot). Myth: a cup (pot) heavier is not necessarily good.

　　Simple identification method (5) the stainless steel material: stainless steel material specifications, 18/8 said the stainless steel materials containing 18% chromium, nickel, 8% reach the standard of material, accord with national food grade standards are green environmental protection product, the product rust and corrosion resistance. Ordinary stainless steel cup (pot) body cup body appears pale or dark color, if in a concentration of 1% saline soak after 24 hours can produce rusty spot, its part of the element to exceed bid, directly endanger human body health.

　　(6) the appearance of glass identification method. A look at the inner and outer bravery surface polishing is uniform, so if there is a bruising and scratch; 2 see if mouth welding smooth, this is related to whether feel comfortable when drinking; Three see whether internal seal tightly, plug, and matches the cup body; Four close look, as round as possible.

　　(7) check the label of the cup and other accessories. For indicating the name of the product, capacity, size, name and address of manufacturer, using the standard number, use method and matters needing attention in using. A attaches great importance to the quality of the factory, will strictly comply with relevant national standards require express its product performance.

　　Customers should also note that when choosing products can not only see appearance, also should pay attention to whether the specifications for thermal insulation products. Now part of the product appearance is novel and generous, very similar thermal insulation products, but there is no heat preservation performance. If there is a "wonderful cup", grass green bowl, the modelling of delicate, smooth lines, comfortable feel, no fraud consumer products, because of its instruction was plainly marked can "warm hand, in winter nor hot in summer, the consumer is to blame have only themselves to blame.

　　We in the choose and buy the vacuum flask glass, can also be used as identification methods:

　　Look at heat preservation container silver uniform coating, not loose, unscrew the base, the following vacuum suction port in good condition.

　　Vacuum cup (pot, bottle) when using the matters needing attention:

　　Vacuum cup cannot long fruit juice, milk, green tea or carbonated soft drinks, etc., used for the first time with neutral detergent wash thoroughly.

　　In use process to avoid collision and impact, so as not to touch the bad or plastic cup body, cause insulation failure or leakage. Tighten the screw the strength should be appropriate, don't force rotating, so as to avoid screw failure. Often drink coffee, tea or drinks, the tank will change color this is normal phenomenon, dip in with toothbrush toothpaste can be cleared.