These results prompted us to evaluate the storage stability of the beads. For these experiments, beads of each composition (ALGPODES containing GOx/HRP and one of the chromogenic agents; ODI, AAP/DHBS, or TMB) were prepared and stored in vials either in dry form (padded on a filter paper to remove excess of water) or in wet form (immersed in 10mL of DI water). At the selected times, three beads of each composition were placed into the cell (Figure ) containing 1 mL of a 0.2 mM glucose solution and their color development followed capturing pictures every 5 seconds for 60 minutes. As it can be observed in Figure , stable responses were obtained for all beads when stored in dry conditions.