USGS Employee At Work

Image: USGS Employee At Work

Detailed Description

Laura Coffey,a chemist at the National Water Quality Laboratory, loads on-line solid-phase extraction cartridges into the high-performance liquid chromatography/mass spectrometer (HPLC/MS) in preparation for testing and calibration

Details

Image Dimensions: 2048 x 1536

Date Taken:

Location Taken: US