Torr – A Unit for Vacuum and Low-Pressure Measurements

Thetorris a unit of pressure named after Evangelista Torricelli, the inventor of the barometer. One torr is defined as 1/760 of an atmosphere, approximately equal to 133.322 pascals.

History & Background

The torr was developed to facilitate precise measurements in low-pressure environments, especially in vacuum systems and laboratory applications.

Conversion Factors

• 1 torr ≈ 133.322 Pa
• 1 torr ≈ 0.133322 kPa
• 1 torr ≈ 1/760 atm

Applications

Torr is used extensively in vacuum technology, scientific research, and the calibration of pressure measurement instruments.

Interesting Facts

Many laboratory instruments, such as vacuum gauges and mass spectrometers, use torr as the primary unit for pressure measurement.

Conclusion

The torr offers a precise and practical unit for low-pressure environments, making it indispensable in both scientific research and industrial applications.