Is borosilicate glass cup safe to drink water?

People often ask if drinking water from high borosilicate glass cup is toxic? In fact, this is a misunderstanding that people are not familiar with high borosilicate glass. High borosilicate glass (also known as hard glass) is made by using the properties of glass to conduct electricity at high temperatures. It is heated inside the glass to achieve glass melting and is processed by advanced production technology. It is a special glass material with low expansion rate, high-temperature resistance, high strength, high hardness, high light transmittance, and high chemical stability. It is harmless to the human body. It is used for our common microwave oven special glass turntables, heat-resistant Teapot, teacup, etc. Many glass cups on the market are made of high borosilicate glass, which is more resistant to high and low temperatures than traditional glass and is recognized as a safer glass material.

water cup

Why do you say that high borosilicate glass is safer? Because high borosilicate glass has a very low coefficient of thermal expansion, about one-third of that of ordinary glass. This feature can better reduce the influence caused by temperature gradient stress, thus having stronger fracture resistance. Because its shape deviation is very small, this also makes it an indispensable material in telescopes and mirrors. Although its thermal shock resistance is strong, it does not mean that it will not be broken due to rapid changes in temperature. Normal glass is shattered. The cracks of high borosilicate glass are often relatively large, which also causes damage to a certain extent. The coefficient is smaller.

wine glass

So in life, how do we distinguish whether it is made of high borosilicate glass? Remember the test tubes commonly used when doing chemical experiments in junior high school? That is made of high borosilicate glass because the high borosilicate glass test tube has very high chemical stability, high-temperature resistance can be directly heated. The common high borosilicate glass we buy every day has high transparency, lightness, and a thin bottom. Generally, cups with a thicker bottom are pressed and not high borosilicate; most of the double-layer glasses we often see are high boron Cups made of silicon heat-resistant glass. The main processes of high borosilicate heat-resistant glass are manual blowing and semi-automatic assembly line, etc., which are relatively more expensive. Compared with ordinary glass, high borosilicate glass has higher transparency and smoother touch. Even the milk bottles for babies are made of high borosilicate glass. You can imagine its safety. Now you still ask the question that drinking water from high borosilicate glass is toxic?

borosilicate baby bottle

No matter whether it is made of high borosilicate glass or other glass production processes, the purchasing manager of our Meiyang Glass has more than ten years of experience in the glass industry. Once the glass is in his hand, he can tell whether it is high borosilicate glass or not. Yes, you can even guess what craftsmanship is made. This is the reason why I admire him so much. He uses his profession and years of experience to continuously teach to every colleague, let us learn about glass together.