 Image Number D2872-1 |
Roy Teranishi samples the headspace over fresh grapes just before injecting a sample into a gas chromatograph. (1963)
Photo by USDA-ARS.
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.