This type of Silica gel, is impregnated with an 'organic indicator' which is rated as completely safe. When free from moisture, the particles are dark orange. As the particles take up moisture, they turn to Orange-Yellow and then to Green and this indicates saturation and now requires replacement or regeneration. Silica gel is a desiccant known for its great moisture-adsorbing capabilities. Silica gel consists of silicon dioxide and is shaped as small, porous beads. Silica gel is available in different types and sizes, making it a versatile desiccant capable of application across a wide range of industries. Its primary role is to adsorb moisture, preventing it from damaging the surrounding environment or products.