The National Physical Laboratory (NPL) India, established in 1947, serves as the country's premier measurement standards laboratory, operating under the Council of Scientific & Industrial Research (CSIR). Located in New Delhi, NPL plays a vital role in maintaining the national standards of measurement that ensure accuracy, traceability, and reliability across scientific and industrial sectors. With a team of over 500 scientists and engineers, NPL offers an extensive range of calibration services, including dimensional, thermal, electrical, and optical calibrations, all compliant with international systems.

NPL’s innovative research programs, such as quantum metrology and nanometrology, are at the forefront of advancing measurement techniques, crucial for emerging technologies. The laboratory provides over 15,000 annual calibrations and maintains more than 1,200 active standards. Its commitment to excellence is underscored by ISO/IEC 17025 accreditation for calibration services, ensuring the highest levels of precision and quality. NPL is integral to fostering growth in trade, industry, and research, making significant contributions to India's scientific landscape.