Turns from blue to pink as it saturates — visible moisture indication at a glance.
Silica Gel
Blue Silica Gel (Color-Indicating Silica Gel)
Description
Blue silica gel combines the adsorption and moisture-proof performance of narrow pore silica gel with a visible indicator function. During moisture absorption it changes from blue to light blue, and finally to light red or light pink — indicating ambient humidity and showing at a glance whether the desiccant needs replacing.
Structure & key data: Narrow pore base · Color change blue → light blue → pink
Applications
Respirators and breathing apparatus
Transformers and electrical cabinets
Precision instruments
Leather, clothing and household appliance packaging
Usable alone or combined with narrow pore silica gel
Technical Specifications
Property
Value
Qualified size ratio (%)
≥ 90
Adsorption capacity RH20% (%)
≥ 8
Adsorption capacity RH35% (%)
≥ 13
Adsorption capacity RH50% (%)
≥ 20
Color at RH20%
Blue / light blue
Color at RH35%
Purple / light purple
Color at RH50%
Light red / light pink
Loss on heating (%)
On agreement
Appearance
Blue / light blue
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Packaging
Composite bag, 25 kg. Other packaging available on request.
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Storage
Store in a dry, ventilated place. Keep sealed against moisture.
