The GS DryBag contains Envirogel desiccant beads and is the latest alternative to blue (cobalt chloride) indicating silica gel.

The GS DryBag indicates an orange/yellow colour when active and changes to green/black over time when the desiccant beads become saturated.

The beaded, self-indicating Envirogel should be replaced once the colour has changed from orange to green/black.