National Physical Laboratory (NPL) is a national metrology institute developing and maintaining measurement standards. It is engaged in research covering acoustics, engineering, medical physics, materials, communications, environmental monitoring, chemical analysis, and other areas. NPL provides a range of products and services, including drug discovery, quality management system consultancy, optical measurement, industrial sterilization, radioactivity services, etc. The laboratory caters to aerospace, defense, energy, environment, finance, food and agritech, IT, and other sectors.