​The NIST Store is an online shopping experience where customers can order NIST products and services including calibration services, Standard Reference Data products, and Standard Reference Materials. In compliance with Executive Order 14247, checks will no longer be an approved payment method after September 30, 2025. The annual price update for the calibration services will take place on March 1st 2026. All orders after March 1st will be at the updated fee. Featured Programs Calibrations The calibration services of the National Institute of Standards and Technology (NIST) are designed to help the makers and users of precision instruments achieve the highest possible levels of measurement quality and productivity. See Calibration FAQs Standard Reference Data For over 50 years, NIST has developed and distributed Standard Reference Data in Chemistry, Engineering, Fluids and Condensed Phases, Material Sciences, Mathematical and Computer Sciences and Physics. See SRD FAQs Standard Reference Materials NIST supports accurate measurements by providing Standard Reference Materials® with well-characterized composition, or properties, or both. SRM Home Page See SRM FAQs SRM Product List (Annual PDF) Licensed Distributors Site Privacy Accessibility Privacy Program Copyrights Vulnerability Disclosure No Fear Act Policy FOIA Environmental Policy Scientific Integrity Information Quality Standards Commerce.gov Science.gov USA.gov Vote.gov