The materials used in glass cups can usually be divided into ordinary sodium calcium glass, tempered glass, and high borosilicate heat-resistant glass. However, these three types of glass cups are difficult to distinguish from each other in terms of appearance. Usually, outsiders watch the excitement, while insiders watch the doorstep. As a general public friend who buys glass cups, it is difficult to accurately determine the material of the glass cup. So, how to distinguish whether the obtained glass is a high borosilicate glass cup?
1. You can put the cup in the refrigerator, refrigerate for 24 hours, take out and pour 100 degrees hot water. If it explodes, it is definitely not high borosilicate glass.
2. High borosilicate glass cups have better transparency, finer body, smoother feel, high temperature resistance, and resistance to sudden cooling and heating, which is a major feature of high borosilicate glass products.
3. High borosilicate glass is made by firing at a high temperature of over 600 degrees Celsius. The cup is thick and heavy to handle. It is a new type of environmentally friendly tea cup and is increasingly favored by people.