Measuring clorophyll (IMAGE) University of Gothenburg Caption Measurement of chlorophyll in leaves using a chlorophyll measurement device called a SPAD. The measurement is done using light, leaving the leaf undamaged. Credit Jenny Klingberg 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.