Researcher works with gas chromatograph (IMAGE) Syracuse University Caption Bhattacharya performs maintenance on her gas chromatograph, a key piece of lab equipment that allows her to quantify the concentrations of leaf waxes in ancient sediments. Credit Syracuse University Usage Restrictions None License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.