Distinguish between true and false with a sterling silver inner cup How to distinguish between true and false with a sterling silver inner cup

1, boiling water experiment. The thermal conductivity of silver is stronger than that of many metals, so when we drink water from a silver cup, the temperature at the spiral of the cup mouth will be hotter than that of other thermos cups, which is an obvious feature of the silver cup.

2, the cup has a border. The whole inner container of the silver cup is made of pure silver. At the level of the cup mouth, we can clearly see that there is a dividing line between the inner container and the outer shell, but the silver-plated cup does not. Generally, the silver-containing area of a silver-plated cup will not reach the cup mouth.

3, the inner wall observation. The liner of a pure silver cup is made by stretching process, and will be polished after molding, so the liner of the cup will leave a circle of polishing marks, while the silver-plated cups are smoother because they are made by electroplating process and cannot be polished.

4, heat preservation time. The heat dissipation of silver is stronger than that of many metals, so it also determines that the heat preservation effect of silver cup is not better than that of stainless steel. Generally, the effective heat preservation effect of silver cup is only 4-6 hours, while the time for silver plating or stainless steel cup can reach 8- 10 hour.

5. Certificate identification. Silver is a precious metal, so when buying a silver cup, regular merchants or manufacturers will provide an appraisal certificate issued by an appraisal institution, and the information on the certificate can be inquired online. A silver cup with a certificate is generally infallible.