0.25g Molecular Sieve Desiccant Sachets – Bulk Pack, Ships from USA
0.25g Molecular Sieve Desiccant Sachets – Bulk Supply, Fast US Shipping
Need reliable moisture control for small, sensitive packages? WiseMini 0.25g molecular sieve sachets are built for high-volume buyers who can’t afford moisture failures. 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 – $22.00 ($0.022/pc)
- 2,000 pcs – $38.00 ($0.019/pc)
- 3,000 pcs – $52.00 ($0.017/pc)
- 5,000 pcs – $76.00 ($0.015/pc)
- 7,000 pcs – $96.00 ($0.014/pc)
- 9,000 pcs – $115.00 ($0.013/pc)
- 12,000 pcs – $142.00 ($0.012/pc)
- 24,000 pcs – $265.00 ($0.011/pc)
Need more than 24,000 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: 0.25g
- 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 0.25g sachet placed inside a sealed foil pouch maintains the dry environment needed to keep 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. Placing a 0.25g sachet inside each bottle or blister cavity ensures 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. These sachets are sized specifically for small device pouches, 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 0.25g sachet inside a sealed ESD bag or component tray keeps humidity below the threshold where damage occurs during storage and shipping.
🍝 Specialty Food & Nutraceuticals
Small-format food products — single-serve packets, supplement capsules, herbal sachets — benefit from a 0.25g desiccant to prevent 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 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 $22.00. Larger quantities offer significantly lower per-unit cost — down to $0.011/pc at 24,000 pcs.
Can I order more than 24,000 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.