A U.S. Geological Survey chemist evaporating sample extracts

A U.S. Geological Survey chemist evaporating sample extracts in laboratory hood to concentrate pesticide residues

Detailed Description

Organic Chemistry Research Laboratory — Sacramento, California. A U.S. Geological Survey chemist evaporating sample extracts in laboratory hood to concentrate pesticide residues for later analysis. The samples are process with nitrogen so they are not oxidized.

Details

Image Dimensions: 400 x 213

Date Taken:

Location Taken: Sacramento, CA, US

Credits

U.S. Geological Survey