Glass pH electrode and monitor

Glass Tubing for Sensors

Accurate sensors depend on glass tubing with high geometrical tolerances, as well as precise light transmittance, electrical insulation, and a matched CTE to metals and alloys for effective bonding. 

Versatile glass tubing with outstanding properties

Sensors for a wide range of applications are only as good as the protective glass that surrounds them. The large variety of glass types and dimensions means that SCHOTT tubing is present in areas ranging from electromechanical, thermal, and magnetic to radiation and electroanalytical sensing. Among the many advantages of our glass tubing for sensors are high geometrical tolerances, outstanding heat and chemical resistance, and the ability to be sealed to metals and alloys for a gas-tight, hermetic bond.

UV light sensor

UV light sensors

SCHOTT offers glass tubing with very high UV light transmittance, making them ideal for UV sensors. Each section of the electro-magnetic spectrum demands specialty glass tubing, with the ability to be sealed to tungsten and Kovar alloy a key requirement.

Photomultiplier with green housing


The highly sensitive detection of light performed by UV-transmitting photomultipliers depends on glasses with exceptionally high UV light transmission, such as SCHOTT 8337B. This unique glass offers further processing at low temperatures, as well as a stable glass-to-metal bond.

Glass pH electrode and monitor

Electroanalytical sensors

Electroanalytical sensors such as pH electrodes require protective glass tubing with high electrical resistance to offer a strong seal with the pH-sensitive membrane. Glass tubing also provides stable environmental protection for gas sensors.

Series of glass liquid level sensors

Liquid level sensors

In tanks and boiler systems, the levels of the liquid inside are measured with sensors using glass with outstanding thermal resistance and mechanical strength. This provides highly accurate measurement of extremely high pressures.