How to Use the Simplest Way to Detect Whether the Stainless Steel Vacuum Flask is Insulated?
We have introduced a method before, listening with ears, but some friends said that this standard is not easy to judge, so I will share two quick and accurate detection methods.
Add hot water to the cup and touch the outer layer of the cup after 1 minute. If you can feel the surface of the cup is heat, it means that the cup is not insulated. If not, touch it after 1 minute, and you still don’t feel the heat.
Use a hair dryer and blow hot air into the cup. After heating for 3 minutes, touch the outer layer of the water cup with your hands. As the hot air from the hair dryer leaks out, the outer layer of the water cup will be a small amount of heat conduction. Human body problems indicate that the water cup is insulated, otherwise it is not insulated.
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