---
product_id: 201413371
title: "Wisesorb 7 LBS 3A Molecular Sieve, Premium Quality Desiccant Bulk Material"
brand: "wisesorb"
price: "€ 146.40"
currency: EUR
in_stock: null
reviews_count: 8
url: https://www.desertcart.hr/products/201413371-wisesorb-7-lbs-3a-molecular-sieve-premium-quality-desiccant-bulk
store_origin: HR
region: Croatia
---

# Reactivates at 550°C Reusable & durable 0.3nm precise pore size Wisesorb 7 LBS 3A Molecular Sieve, Premium Quality Desiccant Bulk Material

**Brand:** wisesorb
**Price:** € 146.40
**Availability:** ❌ Out of Stock

## Summary

> ♻️ Stay dry, stay ahead – premium moisture control for the savvy pro!

## Quick Answers

- **What is this?** Wisesorb 7 LBS 3A Molecular Sieve, Premium Quality Desiccant Bulk Material by wisesorb
- **How much does it cost?** € 146.40 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/201413371-wisesorb-7-lbs-3a-molecular-sieve-premium-quality-desiccant-bulk)

## 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

- • **Versatile Application:** Perfect for air, natural gas, refrigerants, and various hydrocarbons
- • **Precision Pore Control:** 0.3nm pores selectively absorb moisture, not larger molecules
- • **Long-Lasting & Reusable:** Easily reactivated at 550°C for multiple cycles of use
- • **Industrial-Grade Quality:** Strict QC ensures premium, reliable performance every batch
- • **Rapid Moisture Absorption:** Efficient drying even in low humidity and temperature conditions

## Overview

This 7 lbs pack of 3A molecular sieve desiccant features ultra-precise 0.3nm pores for selective moisture absorption, industrial-grade quality control, and strong durability. It rapidly absorbs moisture even in challenging environments and can be reactivated at 550°C for repeated use. Ideal for drying air, gases, and hydrocarbons, it’s the go-to solution for professionals demanding reliable, reusable desiccant performance.

## Description

7 LBS 3A Molecular Sieve, Premium Quality Desiccant Bulk Material

## 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 backed at 550°C (1020℉) for 2 hours, then transferred to a drying cylinder, and cooled to room temperature for use.

## Images

![Wisesorb 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.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Awesome for 3d printer filament
*by D***L on July 31, 2025*

This lowers the humidity level in a air tight storage box way lower then traditional silica beads. Humidity level has gotten as low as 4 percent. I did place a fan inside the air tight storage box also, one awesome thing I noticed was that it actually removed water out of my filament, I weight the filament on food scale before putting it in the box and after 2 days it dropped weight by .20oz which would be 5.9 ml. Was not expecting that.

### ⭐⭐⭐⭐⭐ Dries ethanol just fine.
*by C***5 on December 10, 2024*

For 190 proof ethanol equal volumes will dry the ethanol. For wetter ethanol, distillation is first needed. Produces a lot of heat, so apply incrementally. Not cheap, but can be regenerated in a very hot oven, I think it takes 12 hours.

### ⭐⭐⭐⭐⭐ Best value
*by B***S on May 28, 2025*

Quality product

## Frequently Bought Together

- Wisesorb 7 LBS 3A Molecular Sieve, Premium Quality Desiccant Bulk Material
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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-02-03*