---
product_id: 505787706
title: "Wisesorb 7.5 LBS 4A Molecular Sieve, Premium Quality Desiccant Bulk Material"
brand: "wisesorb"
price: "S$174"
currency: SGD
in_stock: true
url: https://www.desertcart.sg/products/505787706-wisesorb-7-5-lbs-4a-molecular-sieve-premium-quality-desiccant
store_origin: SG
region: Singapore
---

# 7.5 lbs bulk capacity Reactivatable at 550°C 4A molecular sieve tech Wisesorb 7.5 LBS 4A Molecular Sieve, Premium Quality Desiccant Bulk Material

**Brand:** wisesorb
**Price:** S$174
**Availability:** ✅ In Stock

## Summary

> ⚛️ Stay dry, stay sharp — the ultimate moisture shield for pros who demand perfection.

## Quick Answers

- **What is this?** Wisesorb 7.5 LBS 4A Molecular Sieve, Premium Quality Desiccant Bulk Material by wisesorb
- **How much does it cost?** S$174 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/505787706-wisesorb-7-5-lbs-4a-molecular-sieve-premium-quality-desiccant)

## 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

- • **Lifetime Protection:** Indefinitely rechargeable beads ensure continuous moisture defense without replacement hassle.
- • **Bulk & Easy Handling:** Generous 7.5 lbs volume in an ergonomic dual-handle container for effortless pouring and storage.
- • **Versatile Application:** Ideal for protecting everything from electronics to collectibles, with customizable packaging options.
- • **Precision Moisture Control:** Absorbs over 17% of its weight in water vapor at 25°C, keeping your valuables perfectly dry.
- • **Extreme Temperature Resilience:** Operates efficiently from -20°C up to high-temp reactivation at 550°C for endless reuse.

## Overview

Wisesorb 7.5 LBS 4A Molecular Sieve is a premium-grade, rechargeable desiccant designed for high-efficiency moisture absorption. With fast adsorption of molecules under 0.4nm, it removes over 17% of its weight in water vapor at room temperature and functions in extreme cold. Packaged in a user-friendly dual-handle container, it offers bulk capacity and easy pouring. Reactivate beads at 550°C for unlimited reuse, making it a sustainable, cost-effective solution to protect sensitive items like electronics, collectibles, and documents from humidity damage.

## Description

Wisesorb 7.5 LBS 4A Molecular Sieve, Premium Quality Desiccant Bulk Material

## Features

- 【4A MOLECULAR SIEVE】: 7.5lbs molecular sieve utilize premium quality raw material. The 4A molecular sieve has a fast adsorption speed. With the capability of absorbing molecules with a diameter of no more than 0.4nm. At 77℉/25°C, RH20% it can absorb more than 17% of of its weight in water vapor. IT can also be used in extremely low temperatures of -4℉/-20°C. Each granule is 1.5-2.5mm in size
- 【EASY-TO-POUR】: Our easy-pour container offers both capacity and control. The multi-pound volume holds a generous number of desiccant beads that is easy to carry and pour thanks to a unique handle design. The dual-handle design accommodates multiple hand positions for better maneuverability and control
- 【REACTIVE】: The 4A molecular sieve granules can be placed in a muffle furnace and baked at 550 ° C (1020°F) for 3 hours, then transferred to a drying cylinder, and cooled to room temperature for use
- 【HOW TO USE】: Place 4A molecular sieve granules into an enclosed storage space, until it needs to be replaced. he beads can be reactivated indefinitely, providing a LIFETIME OF PROTECTION
- 【BULK BEADS WEIGHT】: 1 gallon of 7.5 LBS. Do not use them for drying flowers; You can place the beads inside fine mesh food straining bag, mesh bag, T-Sac tea filters, tea bags, drawstring organza bag, muslin bag, mason jar, dryer containers, knee high nylon stockings, clear plastic storage bin, mesh laundry bags or women's hosiery. Even make your own bags and size them to the specific use.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | Wisesorb |
| Model Number | 1 |
| Colour | 4A |
| Product Dimensions | 23 x 9.5 x 29.5 cm; 3.64 kg |
| Material | Silica Gel |
| Item Weight | 3.64 kg |

## Images

![Wisesorb 7.5 LBS 4A Molecular Sieve, Premium Quality Desiccant Bulk Material - Image 1](https://m.media-amazon.com/images/I/615tE1OSssL.jpg)
![Wisesorb 7.5 LBS 4A Molecular Sieve, Premium Quality Desiccant Bulk Material - Image 2](https://m.media-amazon.com/images/I/81JXFRgxJ+L.jpg)
![Wisesorb 7.5 LBS 4A Molecular Sieve, Premium Quality Desiccant Bulk Material - Image 3](https://m.media-amazon.com/images/I/71+LNMAYjlL.jpg)
![Wisesorb 7.5 LBS 4A Molecular Sieve, Premium Quality Desiccant Bulk Material - Image 4](https://m.media-amazon.com/images/I/71x6IYESuVL.jpg)
![Wisesorb 7.5 LBS 4A Molecular Sieve, Premium Quality Desiccant Bulk Material - Image 5](https://m.media-amazon.com/images/I/81sx5vHnz2L.jpg)

## Available Options

This product comes in different **Colour Name, Size Name** options.

## Questions & Answers

**Q: Does 4A Molecular Sieve come activated?**
A: yes

**Q: Which molecular sieve size is best for water absorption?  Are any of the molecular sieves able to be reactivated in a typical house oven?**
A: 13X molecular sieve is best for liquid water absorption. All types of molecular sieve have to be baked at 550℃/1022℉ to be fully reactivated. If you use a house oven, the molecular sieve can be reactivated at some level, but not fully reactivated.

**Q: Are these 4A beads pre-activated or do I have to bake them before use?**
A: They come activated! They work great!

## Frequently Bought Together

- Wisesorb 7.5 LBS 4A Molecular Sieve, Premium Quality Desiccant Bulk Material
- Wisesorb 2 LBS Activated Alumina, Alumina Desiccant, 1 Quart Reusable Dessicant Dehumidifiers Desiccant Moisture Absorber
- Wisesorb 2 LBS 3A Molecular Sieve Desiccant Beads, Dehumidifier Moisture Absorbers

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*Product available on Desertcart Singapore*
*Store origin: SG*
*Last updated: 2026-02-09*