Silica Gel - DESICCANT REFILLS

Description

Silica Gel provides a versatile refill medium for equipment and packaging that need protection from atmospheric moisture. Used in a compatible desiccator or desiccant holder, it helps maintain a drier internal environment and supports the protection of components during storage, handling and service.

Its porous silicon dioxide structure presents an extensive internal surface on which water vapour is adsorbed. This is a surface process rather than the formation of a liquid drying solution. Moisture performance depends on the surrounding humidity, temperature and the amount of material installed.

Typical material applications include electronics, optical equipment, instrument enclosures and protective packaging. For a refill installation, consider both the moisture already present inside the enclosure and moisture entering during use. Matching the charge to the application is more useful than selecting by volume alone.

Choose the refill to suit the equipment’s original media specification, available space and retaining screens. Particle size and the holder arrangement should be confirmed before ordering. Where inspection requires a visible colour change, discuss an indicating silica gel or a separate humidity indicator with our technical team.

Keep unused material sealed until needed and minimise exposure to ambient air during refilling. Follow the equipment’s servicing procedure for removal, cleaning and charging. Any regeneration process should follow instructions for the supplied grade; contact us to discuss refill quantities, packaging and suitable maintenance arrangements.

Material performance and applications

Silica gel is a porous, amorphous form of silicon dioxide. Water vapour is retained within its network of channels, and the material remains dry and free-flowing even when saturated with water vapour. This makes it useful for protecting electronics, optical equipment and moisture-sensitive goods in sealed packaging.

The supplied performance sheet describes silica gel as having lower moisture uptake at low relative humidity, with capacity increasing as humidity rises. Its uptake is faster than the clay reference at high humidity, so keeping unused material sealed and limiting exposure during loading helps retain capacity for the protected package.

Use the comparison curves as selection guidance, then confirm the performance and any regeneration procedure for the specific refill grade. The sheet describes Silica Gel products as reactivatable, but does not provide a temperature or time for regenerating every silica gel formulation.

Reference performance graphs

These graphs show the reference material grades under the printed test conditions; confirm suitability for the refill grade being supplied. Click to view full size.