---
product_id: 493717244
title: "Wisesorb 7.5 LBS Activated Alumina, Alumina Desiccant Great for Filament Drying, Reusable Dessicant Dehumidifiers Desiccant Moisture Absorber Prevent Wet Filament"
brand: "wisesorb"
price: "3261034₫"
currency: VND
in_stock: true
reviews_count: 13
category: "Wisesorb"
url: https://www.desertcart.vn/products/493717244-wisesorb-7-5-lbs-activated-alumina-alumina-desiccant-great-filament
store_origin: VN
region: Vietnam
---

# Absorbs 30%+ water by weight Reusable after 8h oven bake at 200-250°C 3-5mm beads for max surface area Wisesorb 7.5 LBS Activated Alumina, Alumina Desiccant Great for Filament Drying, Reusable Dessicant Dehumidifiers Desiccant Moisture Absorber Prevent Wet Filament

**Brand:** wisesorb
**Price:** 3261034₫
**Availability:** ✅ In Stock

## Summary

> 💼 Stay dry, stay ahead — premium alumina for the pros who demand more.

## Quick Answers

- **What is this?** Wisesorb 7.5 LBS Activated Alumina, Alumina Desiccant Great for Filament Drying, Reusable Dessicant Dehumidifiers Desiccant Moisture Absorber Prevent Wet Filament by wisesorb
- **How much does it cost?** 3261034₫ with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/493717244-wisesorb-7-5-lbs-activated-alumina-alumina-desiccant-great-filament)

## 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

- • **Optimized Bead Size:** 3-5mm porous beads maximize surface area for rapid and deep drying performance.
- • **Versatile Application:** Ideal for filament drying, safes, compressed air, and gas systems—engineered for professional-grade moisture control.
- • **Long-Term Cost Efficiency:** Reusable design means fewer replacements, saving you money while maintaining peak performance.
- • **High-Temperature Stability:** Withstands up to 250°C, perfect for repeated reactivation without losing efficiency.
- • **Superior Moisture Absorption:** Locks in over 30% of its weight in water vapor to keep your gear dry and safe.

## Overview

Wisesorb 7.5 LBS Activated Alumina is a high-performance desiccant featuring porous 3-5mm beads that absorb over 30% of their weight in moisture. Engineered for durability in high-temperature and corrosive environments, it’s perfect for filament drying, safes, and industrial gas drying. Easily reactivated by baking at 200-250°C, this reusable desiccant offers superior moisture control and long-term value for professionals seeking reliable humidity management.

## Description

Wisesorb desiccant Visit the Store Wisesorb desiccant Visit the Store

Review: Great for safes and 3D printers - Works great in both my gun Safe and 3D printer. Works just as planned and sucks up the moisture quickly and daily.
Review: Wow, really makes a huge difference. - It's more expensive and has no color indication so I was skeptical when I got this but figured I'd indulge my bougie impulses and they were well rewarded. I got these for my 3d printer filament dry boxes and it's night and day. I live in the EXTREMELY humid S. Eastern US where the LOW, indoor relative humidity is in the 60% range. Filament starts stringing like crazy after a few hours in the open. To test efficacy I used the exact same desiccant holders and swapped out the silica for activated alumina. My K2 Plus CFS used to bottom out at 15% RH with 3 separate added desiccant holders plus 4 in spool ones. My dry boxes were 20% Just using 2 of them but filled with this stuff took me down to 5% and whenever I swap spools, it gets back down to 5 much quicker. My dry boxes go lower than the minimum 10% my cheapy hygrometers can read. If you're concerned about color indication, don't mix the silica but instead they also sell RH test strips you can use. However what I've found by switching to this is the color does matter. Add desiccant until you reach the desired RH. Whenever that begins to rise it's time to replace/recharge it. The part we care about is the humidity and for filament or electronics, the color indicator shouldn't be what tells you that it's too high. It's also easier to 'recharge' as the color used for indication is toxic while activated alumina is pretty much harmless. While it's more expensive, you get a much better value for the money which does a better job and lasts longer. The filament boxes show petg. I had honestly just thought my hygrometers bottomed out at 20% until testing the alumina. Plus this Wisesorbent is cheaper than the other options.

## Features

- 【Activated Alumina】utilize premium quality raw material with an extremely porous structure and high surface area-to-mass ratio, high strength against crushing and very stable physical and chemical characteristics, even in high temperature and corrosive environments. At 77℉/25℃, RH90%, it can absorb more than 30% of its weight in water vapor. Each bead is 3 – 5mm in size.
- 【Activated Alumina】which has excellent porosity creating tortuous paths and extended surface area can be used in both heated and pressure swing dryers. It has stable physical and chemical characteristics, even in high temperature and corrosive environments.
- 【Activated alumina】has a wide variety of applications, including compressed air and gas drying. In compressed air and gas drying applications, activated alumina can achieve dew points -100°F/-73℃, depending on the dryer. It is suitable for deep drying under pressure greater than 5kg/cm2.
- 【How to Use】: Place activated alumina into watertight dryer or container and then place dryer or container into the compress air or gas system. Desiccant Activated Alumina ( Aluminum Oxide) Desiccant is perfect for drying air and most other gases with relatively high humidity.
- 【How to Regenerate】: 1. Use the dry gas under lower pressure or higher temperature to pass the activated alumina. 2. Use wet gas which is heated or decompressed to pass the activated alumina. The reusable activated alumina beads desiccant dehumidifier can be reactivated by placing into the oven for 8 hours at 200°C-250°C (do not over 250°C).

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0B81XLQV2 |
| Best Sellers Rank | #12,242 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #55 in Desiccants #118 in Dehumidifiers |
| Brand | Wisesorb |
| Brand Name | Wisesorb |
| Capacity | 3.4 Kilograms |
| Customer Reviews | 4.7 out of 5 stars 308 Reviews |
| Item Weight | 7.5 Pounds |
| Manufacturer | Wisesorbent Technology LLC |
| Material | Activated Alumina |
| Model Name | B0B81XLQV2 |
| Model Number | B0B81XLQV2 |
| Part Number | 7.5lbAA-1 |
| Smart Home Compatibility | Not Smart Home Compatible |

## Product Details

- **Brand:** Wisesorb
- **Capacity:** 7.5 Pounds
- **Item Weight:** 7.5 Pounds
- **Material:** Activated Alumina
- **Manufacturer:** Wisesorbent Technology LLC

## Images

![Wisesorb 7.5 LBS Activated Alumina, Alumina Desiccant Great for Filament Drying, Reusable Dessicant Dehumidifiers Desiccant Moisture Absorber Prevent Wet Filament - Image 1](https://m.media-amazon.com/images/I/614I2jjuKdL.jpg)
![Wisesorb 7.5 LBS Activated Alumina, Alumina Desiccant Great for Filament Drying, Reusable Dessicant Dehumidifiers Desiccant Moisture Absorber Prevent Wet Filament - Image 2](https://m.media-amazon.com/images/I/61ZC-qy-D9L.jpg)
![Wisesorb 7.5 LBS Activated Alumina, Alumina Desiccant Great for Filament Drying, Reusable Dessicant Dehumidifiers Desiccant Moisture Absorber Prevent Wet Filament - Image 3](https://m.media-amazon.com/images/I/61sdx1bfbKL.jpg)
![Wisesorb 7.5 LBS Activated Alumina, Alumina Desiccant Great for Filament Drying, Reusable Dessicant Dehumidifiers Desiccant Moisture Absorber Prevent Wet Filament - Image 4](https://m.media-amazon.com/images/I/71ykBzcq6GL.jpg)
![Wisesorb 7.5 LBS Activated Alumina, Alumina Desiccant Great for Filament Drying, Reusable Dessicant Dehumidifiers Desiccant Moisture Absorber Prevent Wet Filament - Image 5](https://m.media-amazon.com/images/I/81QWLnNnK-L.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: What happens if the desiccant is dried at over 250c? if i have a precise and well controlled oven can it go higher (like 315c)?**
A: heating them over the recommended temp will probably not damage them. however heating them to recharge them leaves a smell like burnt metal and mildew. I would not recommend drying it in your kitchen oven. I did and it took several days for that smell to dissipate. I moved a little toaster oven outside my house and I recharge the desiccant in small batches. 
very effective.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great for safes and 3D printers
*by J***E on December 20, 2025*

Works great in both my gun Safe and 3D printer. Works just as planned and sucks up the moisture quickly and daily.

### ⭐⭐⭐⭐⭐ Wow, really makes a huge difference.
*by K***O on August 10, 2025*

It's more expensive and has no color indication so I was skeptical when I got this but figured I'd indulge my bougie impulses and they were well rewarded. I got these for my 3d printer filament dry boxes and it's night and day. I live in the EXTREMELY humid S. Eastern US where the LOW, indoor relative humidity is in the 60% range. Filament starts stringing like crazy after a few hours in the open. To test efficacy I used the exact same desiccant holders and swapped out the silica for activated alumina. My K2 Plus CFS used to bottom out at 15% RH with 3 separate added desiccant holders plus 4 in spool ones. My dry boxes were 20% Just using 2 of them but filled with this stuff took me down to 5% and whenever I swap spools, it gets back down to 5 much quicker. My dry boxes go lower than the minimum 10% my cheapy hygrometers can read. If you're concerned about color indication, don't mix the silica but instead they also sell RH test strips you can use. However what I've found by switching to this is the color does matter. Add desiccant until you reach the desired RH. Whenever that begins to rise it's time to replace/recharge it. The part we care about is the humidity and for filament or electronics, the color indicator shouldn't be what tells you that it's too high. It's also easier to 'recharge' as the color used for indication is toxic while activated alumina is pretty much harmless. While it's more expensive, you get a much better value for the money which does a better job and lasts longer. The filament boxes show petg. I had honestly just thought my hygrometers bottomed out at 20% until testing the alumina. Plus this Wisesorbent is cheaper than the other options.

### ⭐⭐⭐⭐⭐ Much better than silica desiccant!
*by S***N on March 22, 2026*

This stuff works SO much better than silica dessicant… why the other stuff is advertised as the stuff to use is beyond me… this works fast & strongly pulls out moisture.. and can be recharged!! I found little sugar shakers to put it in…use, put in the oven .. recap and reuse!!

## Frequently Bought Together

- Wisesorb 7.5 LBS Activated Alumina, Alumina Desiccant, Reusable Desiccant Dehumidifier
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*Product available on Desertcart Vietnam*
*Store origin: VN*
*Last updated: 2026-05-20*