Foshan Weller Moisture Proof Technology Co., Ltd. is one of the most experienced manufacturers and suppliers of silica gel packets for window condensation in China. If you're going to wholesale high quality silica gel packets for window condensation, welcome to get free sample and discount information from our factory. We also accept customized orders.
China Silica Gel Packets For Window Condensation manufacturers and suppliers since 2009, with our own factory. Accept wholesale, OEM, ODM orders. Provide custom solutions.

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Specification |
Description |
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Product Type |
Silica Gel Packets for Window Condensation |
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Material |
Silica gel (silicon dioxide, SiO₂) beads or crystals |
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Size |
available in packets ranging from 1g to 100g; or custom sizes |
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Color |
White, blue or orange |
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Absorption Capacity |
It can absorb moisture up to 40% of its weight |
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Regeneration |
Reusable after heating at around 120°C to 150°C |
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Packaging |
Packaged in moisture-proof paper, fabric, or plastic pouches |
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Non-Toxic Indicator |
Optional color-changing indicator |
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Temperature Range |
It works effectively in temperatures between -40°C and 200°C |
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Application |
Placed near window frames or glass to absorb condensation |
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Durability |
Long-lasting; It can work for months depending on environmental moisture levels. |
These silica gel packets for window condensation are highly effective, non-toxic, and reusable desiccant (drying agent) made from silicon dioxide (SiO₂). It works through physical adsorption, where its vast network of internal pores traps and holds water vapor from the surrounding air. By reducing local humidity levels around a window, it directly combats the primary cause of condensation.
High Absorption Capacity
These silica gel packets for window condensation excel in the high-humidity conditions that lead to window condensation.
At 25°C and 80% Relative Humidity (RH)-a common scenario for condensation on cold windows-high-quality silica gel can adsorb approximately 30% to 40% of its own weight in water vapor.
A 10-gram silica gel packet can absorb 3 to 4 grams of water. This is equivalent to removing a teaspoon of water from the air around your window, preventing it from forming on the glass.
Performance Across Humidity Levels
Silica gel's performance is not linear; it increases significantly as humidity rises, making it ideal for tackling condensation.
- At Low Humidity (20% RH): Absorption capacity is around 10% of its weight.
- At Medium Humidity (50% RH): Capacity increases to 20-25% of its weight.
- At High Humidity (80-90% RH): Capacity peaks near its maximum of 30-40%, which is precisely the range where window condensation occurs.
Physical Characteristics and Indicators
1. Visual Indicator
You can customize silica gel packets which contain a cobalt chloride indicator that changes color from orange/blue (dry) to green/pink (saturated), providing a clear visual signal that it's time to regenerate the packets.
2. Non-Liquid Form
Unlike some desiccants (e.g., calcium chloride), these silica gel packets for window condensation adsorb moisture while remaining a solid bead. It does not leak or create a messy liquid solution, keeping your window sills and frames clean.
Reusability
A major advantage of these silica gel packets for window condensation is its ability to be fully regenerated and reused multiple times without a significant loss in performance.
Regeneration Method: Saturated packets can be regenerated by heating in a conventional oven or microwave.
Regeneration Ability: Heating at 110°C to 120°C for 1-2 hours will drive off the adsorbed moisture. After proper regeneration, this silica gel can recover over 90% of its original absorption capacity. And it can undergo this cycle numerous times.
Usage Recommendation
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Window Size (W x H) |
Dampness Level |
Estimated Volume (L) |
Recommended Total Silica Gel |
Equivalent # of 20g Packets |
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Small Window (≈ 60cm x 90cm) |
Low Dampness (Occasional condensation) |
≈ 50 L |
50 - 100 g |
3 - 5 packets |
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Medium Dampness (Frequent condensation) |
≈ 50 L |
100 - 150 g |
5 - 8 packets |
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High Dampness (Constant water flow) |
≈ 50 L |
150 - 200 g |
8 - 10 packets |
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Medium Window (≈ 90cm x 120cm) |
Low Dampness (Occasional condensation) |
≈ 100 L |
100 - 200 g |
5 - 10 packets |
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Medium Dampness (Frequent condensation) |
≈ 100 L |
200 - 300 g |
10 - 15 packets |
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High Dampness (Constant water flow) |
≈ 100 L |
300 - 400 g |
15 - 20 packets |
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Large Window / Door (≈ 180cm x 240cm) |
Low Dampness (Occasional condensation) |
≈ 400 L |
400 - 800 g |
20 - 40 packets |
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Medium Dampness (Frequent condensation) |
≈ 400 L |
800 - 1200 g |
40 - 60 packets |
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High Dampness (Constant water flow) |
≈ 400 L |
1200 - 1600 g |
60 - 80 packets |
Applicability
These silica gel packets for window condensation are suitable for many types of window condensation.
- Seasonal/Temporary Condensation
- Localized/Small-Area Condensation
- Condensation in Sealed Spaces
- Mild Daily Condensation
- Structural or Chronic Condensation
If you are interested in our Silica Gel Packets For Window Condensation, please feel free to contact us !
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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.
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Product Range |
moisture-proof, mildew-proof, odor-proof and rust-proof products. |
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Applications |
designed for residential, commercial and industrial use. used for product packaging, transportation, and warehousing in different industries. |
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Service |
Accept wholesale, OEM, ODM orders; Provide custom solutions. |
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Certifications |
SGS, RoHS, REACH, FDA, DMF; SIMT,MIL-D-3464E, DIN55473, ISO9001, ISO14001, BSCI. |
Product Details and Summary
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Product Type |
silica gel desiccant (moisture absorbing material) |
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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) |
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Indicator Function |
You can choose silica gel with color indication function, to achieve a more convenient reminder function. |
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Main Components |
silicon dioxide (SiO₂); Content ≥ 98% |
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Appearance |
granular, spherical, powdered, beads crystals, sand, etc. |
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Colors |
transparent, translucent, white, blue, or orange |
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Particle Size |
1-3mm, 2-4mm, 3-5mm; or custom sizes |
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Bulk Density |
approximately 700-800 kg/m³ |
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Surface Area |
700-800 m²/g |
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Pore Volume |
0.4-0.8 cm³/g |
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Applicable Humidity Level |
20%-90% RH |
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Operating Temperature Range |
-40 ℃ to 200 ℃ (long-term stability) |
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Maximum Moisture Absorption Rate |
30%-40% of its own weight |
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Physical Properties |
stable internal structure. no expansion or liquefaction. not easily crushed. dust-free. |
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pH |
4-8 |
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Chemical Properties |
chemically inert; It will not chemically react with the inside products. |
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Human-Friendly Feature |
odorless and non-toxic. It meets food grade standards. |
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Environmentally Friendly Feature |
using packaging paper and materials that are biodegradable within two years. It can be discarded for use as fertilizer. |
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Regeneration Temperature |
80℃-150 ℃ ( It can be reused after heating for 2-4 hours.) |
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Packaging Material |
breathable material with strong sealing properties. You can customize packaging materials according to your needs. |
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Printing |
You can custom printed text, pictures, logo for better brand images. |
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Packaging Capacity |
1g, 2g, 5g, 10g, 50g, 100g, 500g, 1000g; or custom capacity |
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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. |

