How to distinguish soda-lime glass from borosilicate glass?

1. Component analysis. Ordinary soda-lime glass is mainly composed of silicon, sodium and calcium, while high borosilicate glass is mainly composed of silicon and boron. Generally speaking, soda-lime glass is ordinary glass. The machine craftsmanship, the body and the bottom of the cup are very thick. Its main components are composed of silicon, sodium, and calcium, which has high stability but poor heat resistance. It is not recommended to take it with boiling water. But it's safe for cold water cups or storage tanks.
2. Density detection. The density of borosilicate glass is smaller than that of soda-lime glass, and it can be compared by buoyancy density measurement.
3. Heat resistance test. High borosilicate glass has strong heat resistance, while soda-lime glass has poor heat resistance. The thermal shock of borosilicate glass is generally 100 to 200 degrees, and soda-lime glass is generally only 80 degrees. High borosilicate pipe is a kind of low expansion rate (thermal expansion coefficient: (0~300 °C) 3.3±0.1x10-6K-1), high temperature resistance, high thermal stability, cold resistance of special glass materials and thermal temperature difference up to 150 °C, high strength, high hardness, high transmittance and high chemical stability, can be made very thin, very transparent, very light. The bottom of the cup is integrally formed, and it will not burst when pouring boiling water, which is very suitable for daily use at home
4. Appearance identification. High borosilicate glass is light in weight, the wall and bottom of the bottle are thin and uniform, and the light refraction is also uniform; The soda-lime glass bottle has a thicker bottom and uneven light refraction.