---
product_id: 180491840
title: "7 LBS 4A Molecular Sieve, Premium Quality Desiccant Bulk Material"
brand: "wisesorb"
price: "€ 159.31"
currency: EUR
in_stock: true
url: https://www.desertcart.com.cy/products/180491840-7-lbs-4a-molecular-sieve-premium-quality-desiccant-bulk-material
store_origin: CY
region: Cyprus
---

# Absorbs 17%+ water vapor at 25°C Reactivates at 550°C for reuse 4A sieve, adsorbs ≤0.4nm molecules 7 LBS 4A Molecular Sieve, Premium Quality Desiccant Bulk Material

**Brand:** wisesorb
**Price:** € 159.31
**Availability:** ✅ In Stock

## Summary

> 💼 Stay dry, stay sharp — premium moisture control for the modern pro.

## Quick Answers

- **What is this?** 7 LBS 4A Molecular Sieve, Premium Quality Desiccant Bulk Material by wisesorb
- **How much does it cost?** € 159.31 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.cy](https://www.desertcart.com.cy/products/180491840-7-lbs-4a-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

- • **Durable & Reusable:** Easily reactivated by baking at 550°C, ensuring long-term, sustainable use.
- • **Versatile Bulk Packaging:** 7 lbs of premium beads in a 1-gallon container, perfect for multiple applications and custom DIY moisture solutions.
- • **High Absorption Efficiency:** Absorbs over 17% of its weight in water vapor at room temperature, keeping your space perfectly dry.
- • **Ergonomic Dual-Handle Design:** Effortless pouring and handling with a smart container built for control and convenience.
- • **Precision Molecular Adsorption:** Captures moisture molecules smaller than 0.4nm for unmatched dryness control.

## Overview

This 7 lbs 4A Molecular Sieve is a premium desiccant designed for rapid and efficient moisture adsorption of molecules ≤0.4nm. It absorbs over 17% of its weight in water vapor at 25°C and can be reactivated by heating to 550°C, making it a durable, eco-friendly solution. Packaged in an ergonomic, easy-pour container with dual handles, it offers professional-grade moisture control for home, office, or industrial use.

## Description

Full description not available

## Features

- 【4A MOLECULAR SIEVE】: 7lbs 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.
- 【BULK BEADS WEIGHT】: 1 gallon of 7LBS. 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.

## Images

![7 LBS 4A Molecular Sieve, Premium Quality Desiccant Bulk Material - Image 1](https://m.media-amazon.com/images/I/615tE1OSssL.jpg)

## Available Options

This product comes in different **Color, Size** 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 Cyprus*
*Store origin: CY*
*Last updated: 2026-02-02*