NABL Accreditation in tamilnadu refers to the National Accreditation Board for Testing and Calibration Laboratories. NABL Accreditation in tamilnadu has been introduced with the aim of providing Industry, government and Industry associations with the scheme of Conformity Assessment Body’s accreditation involving the third-party assessment of the technical competence of testing including calibration and medical laboratories, reference material producers and providers of testing proficiency. NABL Accreditation system is in accordance with the standard ISO/IEC 17011:2004. The main motive of NABL Accreditation system in tamilnadu is to remove the hindrances (technical) to trade based on APLAC 2000 (Asia Pacific Laboratory Accreditation Cooperation). The Accreditation is provided by NABL Accreditation in tamilnadu in the fields such as Electronics, Mechanical, Electrical, Biological, Fluid-Flow, Photometry, Radiological, Thermal & Forensics under testing facilities and Electro-Technical, Non-Destructive, Optical & Radiological under Calibration facilities, Thermal and provides accreditation to medical testing laboratories.