Measurements play an important role in technical field, construction, engineering sectors and in day-to-day activities. The accurate and precise measurements are crucial for scientific and industrial fields. Accuracy and precision in measurements eliminate chaos and encourage novelties which would help to save valuable lives, time and resources. To get accurate and precise measurement, calibration of sophisticated instruments is mandatory. For calibration of these complicated instruments, Certified Reference Materials (CRMs) will help to identify the non-performance of instrument and using this, one can ensure to get accurate and precise data. National Physical Laboratory, India (NPLI) is maintaining the primary and secondary standards and realization of “National Standard” and distribution of measurement traceability to national accreditation bodies and industries. Bharatiya Nirdeshak Dravya (BND^®) division of NPLI is continuously working for the development of various Indian Reference Materials (IRMs) in different sectors. This unbroken chain of traceable measurements improves confidence level in the international trade. In present article, we are going to discuss about the role of BNDs for calibration of sophisticated instruments and quality assurance of products.

测量在技术领域、建筑、工程领域和日常活动中发挥着重要作用。准确和精确的测量对于科学和工业领域至关重要。测量的准确性和精确性消除了混乱并鼓励新奇事物，这将有助于挽救宝贵的生命、时间和资源。为了获得准确和精确的测量，必须对精密仪器进行校准。对于这些复杂仪器的校准，有证标准物质 (CRM) 将有助于识别仪器的非性能，并使用它，可以确保获得准确和精确的数据。国家物理实验室，印度 (NPLI) 正在维护一级和二级标准，实现“国家标准”，并将测量可追溯性分发到国家认可机构和行业。Bharatiya Nirdeshak Dravya (BND)^® ) NPLI 部门一直致力于在不同领域开发各种印度标准物质 (IRM)。这种不间断的可追溯测量链提高了国际贸易的信心水平。在本文中，我们将讨论 BND 在精密仪器校准和产品质量保证中的作用。