Color-Changing Silica Gel Desiccant

Product Description

1. Overview

Indicating silica gel uses fine-pore silica as the carrier with an indicator component. As it absorbs moisture the color shifts from blue to pink, so saturation is obvious without instruments — a standard adsorbent for desiccators, dry cabinets and instrument housings.

Uptake is high: in humid conditions it can absorb over 30% of its own weight. Once saturated, drying at about 120°C drives off the water and restores the blue color, allowing many regeneration cycles at low running cost.

Place the gel in a breathable container or the desiccator base, away from direct sample contact. Fading color signals regeneration; keep regeneration temperature moderate — excessive heat damages the indicator and shortens service life.

2. Key Parameters

• Type: blue indicating silica gel
• Bead size: 2-4mm / 4-8mm
• Packaging: 500g bottles (drums available)
• Uptake: ≥30%
• Color change: blue dry → pink saturated
• Regeneration: 120°C until blue

3. Material & Workmanship

Fine-pore silica base with indicator, sieved into bead sizes. Round beads with little dust and uniform color change. Uptake and indication performance are batch-tested.

Position the gel near the desiccator viewing window so color can be checked without opening the lid.

Applications

Typical Uses

Industries

• Analytical labs standard desiccator adsorbent
• QC industry moisture protection of samples and standards
• Electronics component dry storage
• Teaching labs drying technique training

Selection Guide

Selection by Application