Testing labs in Portchester

Absolute Calibration is an independent calibration and repair laboratory headquartered at 14 Murrills Estate, Portchester, Hampshire, PO16 9RD, United Kingdom. Originally founded in 1967, the company has accumulated more than five decades of specialist metrology expertise and is recognised as a leading independent calibration facility in the UK. Its services encompass precision instrument calibration, repair, and management, delivered from its Hampshire laboratory and at customer sites nationwide. The laboratory's core offering is a broad electrical calibration capability covering DC voltage and current, AC voltage and current, resistance, capacitance and inductance, and time and frequency measurement. Absolute Calibration calibrates a wide range of electrical instruments including multimeters, automatic test equipment (ATE) systems, LCR meters, frequency counters, and general-purpose bench instruments. This electrical scope supports customers in manufacturing, research, and quality assurance who depend on accurate, metrologically traceable electrical measurements. Beyond electrical parameters, Absolute Calibration provides specialist calibration in RF and microwave, temperature, humidity, pressure and vacuum, torque, force, and crimp tools. Pressure calibration spans the full range from vacuum to 700 bar, covering pressure gauges, differential pressure instruments, and multi-function process calibrators. Environmental calibration services encompass temperature probes, thermohygrometers, and data loggers — instruments essential for validating controlled storage areas, environmental chambers, and manufacturing enclosures where temperature and humidity conditions must be maintained within tight tolerances. A distinctive service is the company's fully accredited on-site calibration capability. Absolute Calibration engineers attend customer facilities to calibrate process control instrumentation and validate environmental enclosures and controlled areas directly in situ. This on-site scope carries the same UKAS accreditation as in-laboratory services, so certificates issued at customer premises carry full metrological authority. The offering is particularly valued where removing instruments from production lines would disrupt operations, or where quality standards require calibration in the actual operating environment. Absolute Calibration holds UKAS accreditation to BS EN ISO/IEC 17025, the internationally recognised standard for the technical competence of testing and calibration laboratories, providing an unbroken traceability chain to national primary measurement standards. The company is also certified by BSI to ISO 9001 for quality management (certificate Q05171) and to ISO 14001 for environmental management (certificate EMS639069). As a UKAS-accredited body participating in the ILAC Mutual Recognition Arrangement (ILAC-MRA), Absolute Calibration's certificates are accepted in more than 60 signatory countries including EU member states, the United States, Australia, and Japan. For laboratory-based calibrations, Absolute Calibration offers a seven-day door-to-door turnaround, collecting and returning instruments as a complete managed service. An online help desk supplements telephone support, enabling customers to log collection requests, request quotations, and track instrument status. The company regards its customer support infrastructure — including its on-line Help Desk facility — as central to its service proposition alongside the technical competence of its calibration engineers. The breadth of Absolute Calibration's measurement scope — spanning electrical, RF and microwave, temperature, humidity, pressure, torque, and force — means it serves customers across electronics manufacturing, aerospace, automotive, pharmaceutical and healthcare manufacturing, process industries, research institutions, and environmental monitoring. The combination of UKAS ISO/IEC 17025 accreditation, over 55 years of operational history, robust ISO 9001 quality systems, ISO 14001 environmental certification, and accredited both laboratory and on-site service capability makes Absolute Calibration a credible and comprehensive calibration partner for organisations with demanding measurement assurance requirements.