The Leaf Chamber Fluorometer is an exciting new addition to the physiological instrumentation available to the scientists at ACRI. The LCF has raised the investigative capabilities of the cotton research team and made it possible to study in greater depth stress related physiological responses in cotton. Its application will be broad encompassing stresses induced by pests and environmental extremes such as temperature and available water. Current and future projects will be measuring gas exchange and chlorophyll fluorescence concurrently, exploring and revealing the physiological origins of stresses in cotton that could result in declining yield and fibre quality. Significant findings using the LCF are expected over the next few years which will maintain research of an innovative standard in areas of cotton physiology for the team at ACRI.