ISO 17025 Accreditation assures that TR Calibration, our Calibration Laboratory Services, Technicians, Processes and Data Accuracy meet our industries highest standards. Annually, TR Calibration Australian Calibration Laboratories conduct internal audits, and undergo rigorous external audits by the National Association of Testing Authorities, Australia (NATA). This ensures year in and year out we offer our customers the highest quality necessary, and meet ISO 17025:2005 qualification, with TR Calibration being NATA Accredited since 1954.