Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

News and Updates

Displaying 151 - 175 of 277

NIST Standard Story: A Fish Story

NIST scientists have thoroughly measured and characterized more than 1,300 physical products, NIST Standard Reference Materials ®, to help people in industry

SF6 Shows Promise as Mercury Substitute

Elemental mercury – which is being phased out of commercial thermometers worldwide due to safety concerns – may also be replaced as a temperature reference

Measuring Smokestack Emissions Accurately

Society is increasingly concerned about exactly how much carbon dioxide and other pollutants are coming out of smokestacks. But current measurements are clouded