Dipstick for Pesticides (IMAGE) American Chemical Society Caption A test strip shows a visible color change indicating the presence of pesticides, and advance toward a dipstick test for foods and beverages. Credit The American Chemical Society Usage Restrictions None License Licensed 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.