Blue Indicating Silica Gel Beads – 500 ml jar

These blue, indicating silica gel beads are a high-capacity desiccant designed for effective humidity control in enclosed spaces. Supplied in a 500 ml screw-top jar, they are easy to store, dispense, and reuse for custom-sized desiccant packs. They weigh around 450g full of this product.

Silica gel adsorbs moisture from the air, helping protect contents from corrosion, mold, and humidity-related damage. The blue variant includes a color indicator that changes as the beads become saturated, giving a clear visual signal when they need to be recharged.

These beads are ideal for creating DIY desiccant packs using breathable fabric bags or mesh containers. For 3D printing users, they are especially useful for keeping filament spools dry inside storage boxes or dry cabinets. The same principle applies to camera cases, electronics enclosures, tool drawers, transport cases, and sealed storage containers.

A major advantage of silica gel beads is their reusability. Once the indicator shows saturation, the beads can be dried and returned to service. Regeneration can be done in a standard kitchen oven or toaster oven by spreading the beads on a baking sheet and heating them at 110 °C for 1–2 hours. After cooling, they are ready for reuse. Make sure you return recharged beats to a sealed container as soon as they are cool enough, because they begin to absorb moisture as they cool.

The bead format allows flexible dosing: use more beads for larger volumes or high-humidity environments, and fewer for small containers. The jar format keeps handling clean and controlled compared to loose bags or sachets.

Recommended accessory: Fabric drawstring bags (7 × 12 cm)
These silica gel beads are ideal for use with our breathable fabric drawstring bags. The fabric allows air and moisture to reach the beads efficiently while keeping all particles contained. This makes it easy to create custom-sized desiccant packs for filament boxes, dry cabinets, tool storage, and transport cases.

Recommended container option
To make reusable desiccant packs easier to use and position, these silica gel beads can be placed inside a permeable mesh box. For example, this 5 × 5 × 5 cm mesh box design on Printables: https://www.printables.com/model/1570938-mesh-box-5x5x5cm provides good airflow while keeping the beads contained. It’s a practical complement to the beads — suitable for dry cabinets, filament boxes, tool cases, and similar enclosures. If you’d like, we can print and supply this mesh box ready to use with the beads and/or fabric drawstring bags. Please contact us to request a quote and to have this printed for you.

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Key features

• High moisture adsorption – effective humidity control

• Color-indicating – shows when beads are saturated

• Reusable and rechargeable – dry and reuse multiple times

• Convenient jar packaging – easy to pour and measure

• Flexible use – suitable for technical and household storage

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Technical details

• Material: Silica gel (SiO₂)

• Type: Blue, indicating desiccant beads

• Packaging: 500 ml screw-top jar

• Regeneration method: Bake at 110 °C for 1–2 hours

• Intended use: Humidity control in enclosed spaces

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Typical applications

• 3D printer filament spool storage

• Dry boxes and sealed containers

• Camera and optics cases

• Electronics enclosures

• Tool drawers and spare parts storage

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Handling & safety notes

• Not for food use

• Avoid inhaling dust

• Keep away from children and pets

• Do not mix with food or animal feed storage