National Physical Laboratory (NPL) – national measurement institute for the United Kingdom.
This organisation is responsible for maintaining the primary measurement standards for the UK.
Featured pressure calibration products
DPC Low Range Pressure Controller and Calibrator - The DPC low range pressure controller calibrator measures and generates low range pressures over 1, 10, 100 or 1000 mbar, and can be used as a pressure measurement device or as a test and calibration device for pressure sensors and pressure switches.
Calibration Hand Pumps - Explore pneumatic and hydraulic calibration hand pumps for precise pressure/vacuum generation. Ideal for labs, factories & process plants with pressure transfer standards.
Glossary of Calibration technical terms
- BSL – Best Straight Line
- Compensated Temperature Range
- Dead Weight Tester
- PPM – Parts Per Million
- Primary Pressure Reference Standard
- Secondary Pressure Standard
- Span Offset
- Traceable Calibration
- TSL – Terminal Straight Line
- UKAS – The United Kingdom Accreditation Service
- UKAS Calibration Certificate
- Zero Offset
- Zero Tare
Help from Calibration resources
- Determining calibration error of Bourdon tube pressure gauge
- What is the difference between zero offset and zero drift?

