The safest way forward is use the services of ISO-based accredited laboratory. Laboratory whose staff, technical capabilities & equipment and management systems have been independently audited and been accredited with 17025 and ISO standards.

ONH’s Calibration lab is one of the Iran’s leading 17025 and ISO accredited calibration laboratories offering instrument calibration services throughout the area.

ONH calibration lab is an independent laboratory providing full calibration services, Chemical and Physical, throughout the whole of the Area. Electrical, Dimensional, Temperature, Pressure, Torque, chemical, control valve, safety valve, High voltage. On-Site calibration services for both mechanical and electrical instrumentation are also available.