National Accreditation Board for Testing and Calibration Laboratories राष्ट्रीय परीक्षण और अंशशोधन प्रयोगशाला प्रत्यायन बोर्ड
परिभाषा
the act of granting credit or recognition (especially with respect to educational institution that maintains suitable standards); "a commission is responsible for the accreditation of medical schools"