There are many types of stainless steel vacuum coffee pots in the market, and the prices vary greatly. Yet some customers often spend a lot of money not buying a good one. Here is an introduction on purchasing the stainless steel vacuum coffee pots.
Generally, professional manufacturers would deliver some information in the label or manual, including the product’s type, name, volume, material, production address, manufacturer, standard number, after-sales service, usage method, etc. If those content not being seen, then such a coffe maker could be problemtic in using.
Check the surfaces of the inner tank and the outer tank to see whether they are uniformly polished or not, and to see if there are bruises, scratches or burrs on them.
Check the mouth welding to see if smoothly being integrated, which matters that whether you feel comfortable or not when drinking water.
Check the internal seal to see that whether it is tight or not and that whether the screw plug matches the cup body or not.
Check the spout. The rounder the spout is, the better it will be. The spout with immature craftsmanship would not remain round enough.
First, twist off the lid to see if the lid fits the stainless steel vacuum air pot completely, then pour water (preferably boiled water) into the pot, and turn the pot upside down for two or three minutes to see if any water leaks out .
As for heat preservation, the vacuum structure can effectively control and conduct the heat by three ways such as heat conduction, heat convection and heat radiation.
The plastic used in the stainless steel vacuum coffee maker should be food grade. This kind of plastic has a small smell, a bright surface, no burrs, and is durable, being aged slowly. In contrast, regualr plastic or recycled one would not work well in using due to its drawbacks such as heavy unpleasant smell, dull colors, many burrs, quickly being aged, cracked and even smelling stink after a long time. This would not only shorten the durability of the stainless steel vacuum coffee maker, but also harm consumers' health.
While purchasing stainless steel vacuum coffee pots, it is important for consumers not only to pay attention to the appearance or brand name, but also to the instruction that would tell them whether the pots preserve the heat with the double-layers or vacuum. Nowadays many stainless steel vacuum coffee pots are elegant in appearance and novel in style, yet not being qquipped with a vacumm. Thus it is necessary for customers to read the labels on the pacage and the instructions clearly so as to not make those mistakes mentioned above in purchasing.