#$%^&*AU2017201480A120170323.pdf#####SWEAT SIMULATION, COLLECTION AND SENSING SYSTEMS ABSTRACT Biological chemicals, potentially found in blood are measured by collecting sweat and determining the concentration or meaning of the selected chemical in sweat. The sweat can be collected using a time based, interval collector (10) and analyzed using an external device. It can also be collected on a one time basis, using a flexible, chemical capacitor (50), or on a continuous basis using a chemical, field effect transducer (98).