Eliminates the messy, time consuming job of changing loose desiccant. Convenient, easy to handle desiccant in a cartridge fits into the bottom section of standard glass or CG-1226 desiccators. The cartridge consists of a durable polyester-felt bag with a perforated Mylar® cover sealed in place. It is filled with Natrasorb® TI indicating silica gel beads which change color from blue to pink when moist. Saturated gel can be regenerated in a 300º F (150ºC) vented oven for 3 hours or more until blue color returns. May be reactivated repeatedly without degradation. Individually sealed in a moisture-proof pouch.