Description
Silica Gel Blue Indicating 2–5 mm Beads – 55 lb Bag
2–5 mm blue indicating silica gel beads remove moisture from compressed air, gas, and enclosed spaces. Supplied in a 55 lb bag, the beads change from blue when dry to pink as they adsorb moisture, providing a visible indication that regeneration or replacement may be needed.
| Bead Diameter | 2–5 mm |
| Form | Beads |
| Color Change | Blue to Pink |
| Moisture Indicator | Cobalt Chloride |
| Bulk Density | ≥46.5 lb/ft³ |
| Adsorption Capacity at 20% RH | ≥8% |
| Adsorption Capacity at 35% RH | ≥13% |
| Adsorption Capacity at 50% RH | ≥20% |
| Specific Resistance | ≥1,500 Ω·cm |
| pH | 4.0–8.0 |
| Loss on Ignition | ≤2% by weight |
| Qualified Size Ratio | ≥90% |
| Packaging | 55 lb Bag |
How It Works
Silica gel is a porous form of silicon dioxide that captures water vapor through adsorption. Its cobalt chloride indicator changes from blue to pink as moisture accumulates, making it easier to monitor the condition of the desiccant.
Features & Benefits
- 2–5 mm beads for equipment requiring this desiccant size
- Blue-to-pink color change provides visible moisture indication
- High moisture adsorption capacity for air and gas drying
- Can be regenerated according to the desiccant supplier’s instructions
- 55 lb bulk bag for refilling compatible drying equipment
Common Uses
Used in compatible compressed air desiccant dryers, industrial gas drying systems, desiccant breathers, and enclosed equipment or storage spaces where moisture control is needed.
Installation & Maintenance
Confirm that your equipment requires blue indicating silica gel with a 2–5 mm bead size. Protect the desiccant from liquid water and oil carryover with properly maintained upstream separation and filtration. Follow the dryer manufacturer’s loading and regeneration instructions.
Keep unused beads tightly sealed in a dry location. Monitor the color change alongside dryer performance and outlet dew point to determine when regeneration or replacement is needed.
Handling Precautions
Contains cobalt chloride. Do not use in direct contact with food, pharmaceuticals, or other products intended for consumption. Follow the product Safety Data Sheet for handling, protective equipment, and disposal.
Why Choose This Silica Gel?
This 2–5 mm blue indicating silica gel combines moisture removal with a simple visual indicator. The 55 lb bag provides a practical bulk refill for compatible dryers, breathers, and other moisture-control equipment.