Silica Gel Self Indicating, Orange-Green, 2-5mm

What is Silica Gel Self Indicating? It is a narrow pored beaded form of amorphous silica. The beads gradually change colour from dark orange in the dry (activated) condition to dark green when saturated with water. 

Consistent Quality: We provide only high-quality Silica Gel, ensuring reliable and consistent performance for all applications.

Shipped from Manchester, UK Facility: Sourced and packaged in non-toxic, chemical-resistant containers to ensure safe handling and preserve product quality during transport.

Frequent Uses

Desiccant for Packaging
Used in packaging to prevent moisture damage to products.

Humidity Control in Storage
Keeps storage areas or containers dry by absorbing excess moisture, preserving sensitive items such as documents, textiles, or leather.

Dehumidification in Laboratories
Used in laboratory environments to maintain low humidity levels, protecting sensitive chemicals and reagents.

• Humidity control
• Packaging protection
• Electronics protection

Moisture content at 145°C 3% maximum

Equilibrium capacity for water vapour at

25°C and given relative humidity (r.h.)

10% r.h. > 8% w/w (weight for weight)

20% r.h. > 12% w/w

50% r.h. > 23% w/w

80% r.h. > 30% w/w

BET surface area 600 - 800 m2/g

Pore volume 0.35 – 0.45 ml/g

Average pore diameter 20 – 30 A

pH (10% aqueous solution) Not less than 1.8-2.2

Bulk density 700 - 800 g/l

Colour change
Dark Orange 10% w/w absorption
Olive Green 15% w/w absorption
Dark Green 20% w/w adsorption

Bead Size

Less than 2 mm 5% maximum

Greater then 5 mm 5% maximum