Use to reduce moisture in desiccator cabinets or within cases containing precision laboratory instruments. Silica gel beads transform to pink color when saturated with moisture. The desiccant cartridges can be regenerated by gentle overnight heating in a 50°C oven. For quicker regeneration, cut open the membrane and transport beads to a glass or porcelain dish and heat in a 150°C oven for one hour. Silica gel is non-toxic, non-corrosive and inert.