Foshan Weller Moisture Proof Technology Co., Ltd. is one of the most experienced manufacturers and suppliers of silica gel beads in China. If you're going to wholesale high quality silica gel beads, welcome to get free sample and discount information from our factory. We also accept customized orders.

China Silica Gel Beads manufacturers and suppliers since 2009, with our own factory. Accept wholesale, OEM, ODM orders. Provide custom solutions.

Silica Gel Beads Manufacturers

These silica gel beads are regular spherical particles. They have a smooth and fine surface, with uniform particle size. These silica gels are translucent or white in color. Some products contain color change indicators, which appear blue/orange. They are hard but easy to flow. There is no dust shedding. The particles are distinct in the dry state. After absorbing moisture, they keep their original shape and do not expand. These desiccants are suitable for filling various containers or breathable packaging.

Noted: We can custom desiccant for specific application.

Specifications/Parameters	Details
Product Type	Silica Gel Beads
Material	Non-toxic, inert, and porous silicon dioxide material
Size Range	1-5 mm (Customizable sizes available)
Color Options	Transparent, white, blue, orange
Moisture Absorption Capacity	Up to 40% of its weight in moisture
Humidity Level	20% RH to 90% RH (Relative Humidity)
Hardness	High mechanical strength and low dust formation
Temperature Range	-40°C to 120°C (Optimal absorption below 70°C)
Regeneration Method	Heat (100°C - 120°C) for 2-3 hours
Applications	Desiccants, moisture control, electronics packaging, pharmaceutical storage, etc.

Moisture Absorption

Parameter	Data / Specification
Moisture Absorption Capacity (at 25°C)	RH 20%: 6–8% of its weight RH 50%: 20–25% of its weight RH 80%: 30–35% of its weight Maximum Absorption: Up to 40% of its weight in extreme humidity
Saturation Time	Reach 80% of capacity within 24h (at 25°C, RH 50%)
Recommended Usage	Small Containers (e.g., shoebox, camera case,etc.): 5–10g per liter Medium Spaces (e.g., closet, storage box, etc.): 100–200g per m³ Large Areas (e.g., warehouses,etc.): 1–2kg per 10m³
Regeneration Method	Heat at 100–120°C for 2–3 hours (Reusable until degraded)
Operating Temperature	-40°C to 200°C (reduce efficiency at high temperatures)

Notes

The moisture absorption efficiency is affected by the ambient temperature and humidity. The dosage needs to be increased when the temperature and the humidity are high (such as RH >80%).
Saturation Judgment: Ordinary silica gel beads have no obvious change. Indicating silica gel will change from orange to green or blue to pink.
Not edible, keep away from children and pets.

Recommended Dosage (In Sealed Environments)

Dosage depends on container volume and ambient humidity. Here is the general guidelines:

Scenario	Recommended Dosage of Silica Gel Beads
Small Sealed Containers	5–10g per liter
Medium Storage Spaces	100–200g per m³
Large Spaces/Containers	1–2kg per 10m³
High-Humidity Areas	Increase dosage by 30–50%

Special Use Cases

1. Electronics Moisture Control

Camera Dry Cabinets: 50–100g per 10L (maintain 40–50% RH).
PCB Packaging: 5% of container volume (e.g., 500g for 10L).

2. Food Preservation

Use blue food-grade silica gel: 3–5g per 100g of dry food (e.g., 30–50g for 1kg).

3. Shipping Containers

Hang 4–6 bags (500g each) per m³ or use container desiccant strips.

Best Applications

Application Category	Specific Uses of Silica Gel Beads
Electronics & Precision Instruments	Cameras, lenses, drones, PCBs, medical devices,etc.
Food & Pharmaceuticals	Medicine bottles, supplements, dried foods (It requires food-grade silica gel),etc.
Clothing & Leather Goods	Shoes, handbags, wardrobes, leather storage,etc.
Industrial & Shipping	Sea freight containers, machinery packaging,etc.
Household & Daily Use	Jewelry boxes, document storage, car storage compartments,etc.

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About Us

Foshan Weller Moisture-Proof Technology Co., Ltd. was established in 2009. We are a professional manufacturer and supplier in China, with an factory of over 8,000 square meters.

Product Range	moisture-proof, mildew-proof, odor-proof and rust-proof products.
Applications	designed for residential, commercial and industrial use. used for product packaging, transportation, and warehousing in different industries.
Service	Accept wholesale, OEM, ODM orders; Provide custom solutions.
Certifications	SGS, RoHS, REACH, FDA, DMF; SIMT,MIL-D-3464E, DIN55473, ISO9001, ISO14001, BSCI.

Product Details and Summary

Product Type	silica gel desiccant (moisture absorbing material)
Classification	1. non-indicating silica gel 2. indicating silica gel (1) blue indicating silica gel (blue to pink; containing cobalt chloride) (2) orange indicating silica gel (orange to green; cobalt free and environmentally friendly)
Indicator Function	You can choose silica gel with color indication function, to achieve a more convenient reminder function.
Main Components	silicon dioxide (SiO₂); Content ≥ 98%
Appearance	granular, spherical, powdered, beads crystals, sand, etc.
Colors	transparent, translucent, white, blue, or orange
Particle Size	1-3mm, 2-4mm, 3-5mm; or custom sizes
Bulk Density	approximately 700-800 kg/m³
Surface Area	700-800 m²/g
Pore Volume	0.4-0.8 cm³/g
Applicable Humidity Level	20%-90% RH
Operating Temperature Range	-40 ℃ to 200 ℃ (long-term stability)
Maximum Moisture Absorption Rate	30%-40% of its own weight
Physical Properties	stable internal structure. no expansion or liquefaction. not easily crushed. dust-free.
pH	4-8
Chemical Properties	chemically inert; It will not chemically react with the inside products.
Human-Friendly Feature	odorless and non-toxic. It meets food grade standards.
Environmentally Friendly Feature	using packaging paper and materials that are biodegradable within two years. It can be discarded for use as fertilizer.
Regeneration Temperature	80℃-150 ℃ ( It can be reused after heating for 2-4 hours.)
Packaging Material	breathable material with strong sealing properties. You can customize packaging materials according to your needs.
Printing	You can custom printed text, pictures, logo for better brand images.
Packaging Capacity	1g, 2g, 5g, 10g, 50g, 100g, 500g, 1000g; or custom capacity
Storage	It should be tightly sealed and stored in a cool, dry place; away from direct sunlight and chemical pollution.
Certifications	SGS, RoHS, REACH, FDA, DMF; SIMT,MIL-D-3464E, DIN55473, ISO9001, ISO14001, BSCI.