What are the Key features of Loose silica gel
Silica gel desiccant in loose form is available in free-flowing granules or beads, which allow direct moisture exposure and enhance their absorption capacity. It can be customised for specific moisture control requirements, as it comes in various bead sizes and colours, including indicating and non-indicating types. Silica gel desiccant is more cost-effective for bulk use than silica gel desiccants in breathable packaging. When handling silica gel desiccant, careful placement is necessary to minimise the risk of spillage or contamination.
How Many Types of Loose Silica Gel Are There?
Many types of loose silica gel have strength, powder, and specific features that fit unique needs. Let's find out some of the most common types of silica gel -
1. Indicating silica Gel
The indicating silica gel has a colour-changing ability and is designed to signal its effectiveness visually. Though the silica gel does not expire, its effectiveness declines over time, especially after exposure to moisture. In this case, it is very important to monitor the effectiveness of the absorbents to prevent loss. Silica gel beads and crystals are available in blue and orange varieties. Both are highly effective for moisture control, although they differ in composition and indicators. Blue silica gel beads and crystals contain cobalt as an indicator. They appear dark blue when moisture-free, but as they absorb moisture, their colour changes from dark blue to light blue and finally to pink, indicating that they are saturated and must be replaced. In contrast, orange silica gel beads are eco-friendly, organic, and non-toxic. They turn green when fully saturated and can absorb up to 40% of their weight in water vapour. Both types provide valuable solutions for protecting goods from humidity and moisture damage.
