0.5g Molecular Sieve Desiccant Sachets – Pharma & Device Grade, Bulk
0.5g Molecular Sieve Desiccant Sachets – Bulk Supply, Fast US Shipping
Need reliable moisture control for mid-size sensitive packages? WiseMini 0.5g molecular sieve sachets deliver twice the absorption capacity of our 0.25g version — ideal for slightly larger pouches, bottles, or device packaging where a bigger moisture load needs to be controlled. Stocked and shipped from our US warehouse — no long waits, no customs delays.
📦 Bulk Pricing – The More You Order, The More You Save
- 1,000 pcs – $23.00 ($0.023/pc)
- 2,000 pcs – $43.00 ($0.022/pc)
- 3,000 pcs – $62.00 ($0.021/pc)
- 5,000 pcs – $81.00 ($0.016/pc)
- 7,000 pcs – $110.00 ($0.016/pc)
- 9,000 pcs – $135.00 ($0.015/pc)
- 18,000 pcs – $245.00 ($0.014/pc)
Need more than 18,000 pcs? Contact us with your required quantity and we will confirm the delivery date based on your order size.
Why Molecular Sieve 4A – Not Silica Gel?
Silica gel works fine at moderate humidity. But when your packaging needs to stay dry at very low humidity levels (below 20% RH), molecular sieve 4A is the only reliable choice. It adsorbs faster, holds more moisture at low RH, and keeps working even in cold environments down to -20°C (-4°F).
Product Specs
- Sachet weight: 0.5g
- Sorbent: Molecular Sieve 4A (0.4nm pore diameter)
- Absorption capacity: >17% of its weight at 25°C / RH 20%
- Packaging: Breathable nonwoven, dust-free, no binders or solvents
- Seal type: Melt-seal edges – strong, clean, packaging-line ready
- Back window: Transparent – visually confirm sorbent fill
- Operating temp: -20°C to high-temp environments
Real-World Use Cases
🧪 Diagnostic Reagent Kits
Test strips and reagents degrade rapidly when exposed to moisture. A single 0.5g sachet placed inside a sealed foil pouch provides greater moisture capacity for larger kit formats — keeping reagents stable from production through to end use. Widely used by IVD manufacturers for glucose, pregnancy, and rapid antigen test kits.
💊 Pharmaceutical Bottle & Blister Packaging
Moisture causes tablets and capsules to clump, discolor, or lose potency. The 0.5g sachet is ideal for standard-size pill bottles and multi-cavity blister trays, ensuring the product stays dry throughout its shelf life — even in humid storage or transit conditions.
🩺 Medical Device Sealed Pouches
Sterile medical devices must remain dry from the moment they are sealed until the moment they are opened. The 0.5g size is well-suited for mid-size device pouches and trays, maintaining a stable low-humidity environment without taking up valuable space.
🔌 Electronics & Precision Components
Moisture causes oxidation and corrosion on circuit boards, connectors, and precision metal parts. A 0.5g sachet inside a sealed ESD bag or component tray keeps humidity below the threshold where damage occurs during storage and shipping.
🍝 Specialty Food & Nutraceuticals
Single-serve food packets, supplement bottles, and herbal sachets benefit from the higher absorption capacity of the 0.5g size — preventing clumping, mold, and flavor loss during storage and distribution.
Who Orders These?
- Diagnostic kit manufacturers – protecting test strips and reagents in sealed pouches
- Medical device packagers – maintaining dry conditions from production to end user
- Pharmaceutical companies – moisture control in blister packs and bottles
- Electronics assemblers – preventing corrosion in sealed component bags
- Specialty food packagers – keeping small-format products dry
Frequently Asked Questions
How fast does it ship?
All orders ship from our US warehouse. Most orders are processed within 1–2 business days. No overseas shipping delays or customs clearance issues.
What’s the difference between 0.5g and 0.25g sachets?
The 0.5g sachet contains twice the sorbent material, making it suitable for larger packages or environments with a higher moisture load. If your packaging is bigger than a small foil pouch, the 0.5g is typically the better choice.
What’s the difference between molecular sieve and silica gel?
Molecular sieve 4A outperforms silica gel at low humidity (below 20% RH) and has a faster adsorption speed. For diagnostic reagents, pharma, and other critical applications, molecular sieve is the industry standard choice.
Can these run on automated packaging lines?
Yes. The melt-seal edges and consistent sachet dimensions are designed for compatibility with high-speed automated packaging equipment.
What is the minimum order?
Minimum order is 1,000 pcs at $23.00. Larger quantities offer lower per-unit cost — down to $0.014/pc at 18,000 pcs.
Can I order more than 18,000 pcs?
Yes. We can fulfill larger orders beyond the listed quantities. Please contact us with your required quantity and we will reply with a confirmed delivery date based on your order size.