CSIR-The National Physical Laboratory(NPL) is the premier research laboratory in India in the field of physical sciences.
It has developed core competencies in standards, apex level calibration, engineering materials, electronic materials, materials characterization, radio and space physics, global change and environmental studies, low temperature physics, and instrumentation.
Established in 1947, it is one of the oldest laboratories of the Council of Scientific and Industrial Research. Its main activities are :

1. Research and development
2. Consultancy
3. Sponsored and contract research
4. Calibration and testing.