Schematic of new micro-TAS scheme. (IMAGE) Tokyo Metropolitan University Caption A catalase reaction in a reaction chamber produces gas which pushes ink along a channel. The flow rate is directly tied to the concentration of catalase, itself connected to the original concentration of the analyte. Credit Tokyo Metropolitan University Usage Restrictions Please give credit for use. 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.