There is a need among ecophysiologists for gas exchange systems capable of rapid sampling and numerous replications. Measurements of temporal and spatial variability within tree canopies, or among replicates of plants in experimental units, are often hampered by difficulty in obtaining sufficient concurrent gas exchange data within a reasonable amount of time. Single cuvette systems take too long to obtain data when there are two or more treatments or locations, resulting in the potential confounding of treatment and time effects. Single cuvette systems are also labor intensive, making them relatively expensive and slow. For ozone researchers, limited measurements of gas exchange with single cuvette systems may not be sufficient to detect what are often subtle responses due to ozone exposure.
