Page Banner

United States Department of Agriculture

Agricultural Research Service

Image Number D2438-1

Download a high-resolution (300dpi) digital image here.

Image Number D2438-1

Chemists Craig Byrdwell (foreground) and James Harnly, with the Beltsville Human Nutrition Research Center, review data from one of the liquid chromatography/mass spectrometry machines used in a process called “triple-parallel mass spectrometry.” They use this procedure to analyze the amount of vitamin D in milk, orange juice, and dietary supplements.

 

Photo by Stephen Ausmus.


640 pixels wide: (d2438-1.jpg)




Please visit our Image Gallery
Last Modified: 2/29/2012