--- product_id: 201413371 title: "7 LBS 3A Molecular Sieve, Premium Quality Desiccant Bulk Material" brand: "wisesorb" price: "R$1030" currency: BRL in_stock: true category: "Wisesorb" url: https://www.desertcart.com.br/products/201413371-7-lbs-3a-molecular-sieve-premium-quality-desiccant-bulk-material store_origin: BR region: Brazil --- # Rapid moisture absorption Reusable after high-temp reactivation Strong anti-pollution & crush resistance 7 LBS 3A Molecular Sieve, Premium Quality Desiccant Bulk Material **Brand:** wisesorb **Price:** R$1030 **Availability:** ✅ In Stock ## Summary > 💧 Stay dry, stay ahead — the ultimate moisture control solution! ## Quick Answers - **What is this?** 7 LBS 3A Molecular Sieve, Premium Quality Desiccant Bulk Material by wisesorb - **How much does it cost?** R$1030 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.com.br](https://www.desertcart.com.br/products/201413371-7-lbs-3a-molecular-sieve-premium-quality-desiccant-bulk-material) ## Best For - wisesorb enthusiasts ## Why This Product - Trusted wisesorb brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Long-Lasting & Reusable:** Reactivates at 550°C to extend lifespan and save costs - • **Industrial-Grade Quality:** Strict QC ensures premium, reliable performance every time - • **Precision 0.3nm Pore Size:** Selective moisture absorption for ultra-efficient drying - • **Versatile Application Range:** Perfect for air, gases, refrigerants & hydrocarbons - • **Robust & Pollution-Resistant:** Built tough to withstand industrial wear and contamination ## Overview Wisesorb 7 LBS 3A Molecular Sieve is a premium aluminosilicate desiccant with a precise 0.3nm pore size, engineered for rapid and selective moisture absorption. Designed for industrial and scientific use, it offers strong durability, anti-pollution resistance, and can be reactivated at 550°C for multiple reuse cycles, making it a cost-effective and reliable moisture control solution across diverse applications including air, gases, and refrigerants. ## Description Wisesorb 7 LBS 3A Molecular Sieve, Premium Quality Desiccant Bulk Material: desertcart.com: Industrial & Scientific ## Features - 【3A Molecular Sieve】: 3A molecular sieve desiccant is a type of compound aluminosilicate desiccant whose effective pore size is 0.3nm. It is mainly used to absorb water and does not absorb and molecular larger than 0.3nm. Its application characteristics in industrial use are: rapid absorption seed, a mass of reusable times, strong anti-crash strength, and strong anti-pollution ability, which improves the use effectiveness of molecular sieve and extends its service life. - 【Complies with Industry Standard, Strict Quality Control】: Wisesorb 3A molecular sieve desiccant goes through strict quality control process before they are released from the factory. It complies with molecular sieve industry standard and ensure that every bottle if product are qualified and has premium quality. - 【Wide Range of Use】: Pore size of 3A molecular sieve is 3A, which is applicable for drying of all types air, hollow glass, refrigerating fluid, natural gas, methane, unsaturated hydrocarbon, pyrolysis gas, ethylene, acetylene, propylene, butadiene, etc. - 【Rapid Moisture Absorption, Reusable】: Wisesorb 3A molecular sieve has strong moisture absorption ability even under low temperature and low humidity rate. At the time, it still possesses certain moisture absorption under high temperature . It can be reactivated when dried under 550°C - 【How to Reactivate】: The 3A molecular sieve can be placed in a muffle furnace and baked at 550°C (1020℉) for 2 hours, then transferred to a drying cylinder, and cooled to room temperature for use. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B085W6TXJ8 | | Best Sellers Rank | #52,412 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #135 in Desiccants | | Date First Available | March 13, 2020 | | Item Weight | 7.57 pounds | | Item model number | 45677 | | Manufacturer | Wisesorbent Technology LLC. | | Package Dimensions | 11.65 x 9.13 x 3.54 inches | ## Images ![7 LBS 3A Molecular Sieve, Premium Quality Desiccant Bulk Material - Image 1](https://m.media-amazon.com/images/I/716IY-6gXGL.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: Do these come fairly dust free or could they be run through a Buchner vacuum w/ cheesecloth to clean?** A: Mine was completely dust-free. I dumped them directly from the container to a muslin bag for my safe. **Q: Are the 3A molecular sleeves actually 3A size and are they clean (price seems too good)?** A: yes **Q: Is the regeneration temperature really 550°c? other sources that i can find all list 300c (550f) or 315c (599f) as the maximum temperature to use.** A: Hi, Thank you for your question. The reactivation temperature for our product, 3A Molecular Sieve, is 550°C. **Q: How many times can you reactivate 3A Molecular Sieve?** A: 【How to Reactivate】: The 3A molecular sieve can be placed in a muffle furnace and backed at 550°C (1020℉) for 2 hours, then transferred to a drying cylinder, and cooled to room temperature for use. ## Frequently Bought Together - Wisesorb 7 LBS 3A Molecular Sieve, Premium Quality Desiccant Bulk Material - Wisesorb 20 Packs Breathable Paper Bags, Zip Lock Storage Bags for Small Items, Silica Gel Beads, Desiccant, Jewelry, Samples, 4.3 by 6.3 Inch - Wisesorb 7.5 LBS 4A Molecular Sieve, Premium Quality Desiccant Bulk Material --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.com.br/products/201413371-7-lbs-3a-molecular-sieve-premium-quality-desiccant-bulk-material](https://www.desertcart.com.br/products/201413371-7-lbs-3a-molecular-sieve-premium-quality-desiccant-bulk-material) --- *Product available on Desertcart Brazil* *Store origin: BR* *Last updated: 2026-07-11*