Borosilicate glass tubes and rods are made of silica and boron trioxide, giving them excellent thermal shock resistance, low thermal expansion, and high chemical and corrosion resistance. They are durable, transparent, and available in various dimensions, shapes, and sometimes colors. These properties make them ideal for demanding applications such as laboratory glassware, lighting, instrumentation, and industrial processes. 

Key characteristics 

Thermal properties: High resistance to thermal shock (withstanding rapid temperature changes without cracking) and a very low coefficient of thermal expansion.

Chemical resistance: Inert and resistant to corrosion from most chemicals, acids, and water, making it suitable for laboratory and industrial use.

Durability: Physically robust and can withstand high temperatures up to around \(500^{\circ }\)C without deforming.

Optical properties: Excellent transparency and high optical quality, with good light transmission.

Form: Available as both solid rods and hollow tubes in a wide range of diameters and lengths. They can also be manufactured in various shapes, including round, triangular, and hexagonal. 

Common applications 

Laboratory: Used for glassware, stir rods, and other scientific equipment due to its inertness and durability.

Industrial: Employed in areas with high temperature and pressure, such as tubular level gauges for industrial equipment.

Lighting: Used in lighting applications, often with special properties for specific uses.

Consumer and design: Found in kitchenware, decorative glass, and interior design projects, thanks to its durability and aesthetics.