Desiccants, Oxygen Absorbers, Gas/Liquid Absorbers

Available in Packets, Large Bags, Bulk Containers and Custom Formats

A sorbent is a material designed to remove undesirable substances, such as moisture, oxygen or gas, either through adsorption or absorption. Common examples include oxygen absorbers, or oxygen scavengers, which absorb oxygen molecules most typically by way of iron oxidation; and desiccants, which adsorb moisture and/or gas through binding with and trapping the molecules.

Search categories below or speak to our specialists about: indicating silica gel, molecular sieve, gas absorbers, oxygen scavengers, desiccant capsules, clay desiccants, reusable desiccant DriBoxes™, oxygen absorbing packets, non-ferrous absorbers, activated carbon, desiccant paper, and bulk desiccants.

Shop Desiccants & Sorbents

Oxygen Absorbersmore_vert
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Oxygen absorbers, also called oxygen scavengers bring the oxygen level down reliably to .01% or less.



The MoisturePak® is a two-way sorbent that uses a combination of plant fibers, water and salts to control the humidity by taking up or adsorbing the water vapor inside the container. If it is above the target RH% range, it can also generate water vapor to increase the humidity in the event that the RH level inside is less than ~62%.


bulk sorbents
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Silica gel, molecular sieves and other sorbents in containers from 1 lb aluminum cans to 55 gallon drums.


small desiccant packet
Small Desiccant Packetsmore_vert
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Moisture adsorbing desiccant packets: silica gel, molecular sieve, clay, activated carbon and more.


large desiccant bag
Large Desiccant Bagsmore_vert
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Large bags of desiccant for industrial and commercial applications. Bags as large as 80 units.


desiccant paper
Desiccant Papermore_vert
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Desiccant paper offers high capacity adsorption within a semi-rigid structure. Fast drying and extraordinarily versatile.


desiccant capsules
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Sorbent cartridges provide exceptional moisture adsorbing capacity in a small space.


DriBox Desiccant Cartridgemore_vert
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Transparent polycarbonate and regenerable dehydrating cartridges, called DriBoxes, contain 5.5 grams of Indicating Silica Gel.


custom molded desiccant
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Custom shaped desiccant made via precision machining to exact customer specifications.


high temperature desiccant
High Temperature Desiccantmore_vert
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High tempertaure desiccant capsules are able to withstand temperatures up to 400° C (752° F).


humidity indicator card
Humidity Indicator Cardsmore_vert
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Humidity indicator cards change color from blue to pink, allowing you to see if humidity has entered the container.


humidity indicator plug
Humidity Indicator Plugsmore_vert
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Indicating Desiccators are small refillable tubular desiccators designed for the absorption of moisture in small containers.


Intelledot Oxygen Detectormore_vert
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IntelleDot is an innovative product that detects oxygen content in packaging, providing information to ensure optimum freshness in a wide spectrum of food and medical applications.


desiccant caps
Desiccant Bottles & Capsmore_vert
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Desiccant caps and closures made for caps and vials offer an innovative desiccant to keep bottle contents fresh and dry.


liquid absorbers
Liquid Absorbersmore_vert
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Liquasafe™ liquid absorbers absorb up to 300 times their own weight in aqueous solutions for efficient spill containment.



CryoSorbPax for cryogenic vessels, from molecular sieve packets to palladium oxide getters.


Looking for the “Complete Sorbent System”?

IMPAK Offers Packaging, Sorbents and Sealers

What Are Desiccants?

Desiccants are a type of sorbent that will remove moisture and water vapor from the surrounding environment, in many cases a Mylar foil bag, tin, drum, glass or other type of sealed enclosure. Desiccant media is a very hygroscopic, sometimes natural solid that is chemically inert which will trap water vapor molecules in its tiny pores or tunnels which prevents them from escaping and thereby keeps products dry.

Types of desiccants that IMPAK Corporation carries include: indicating molecular sieve and non-indicating molecular sieve in a range of pore sizes (3A, 4A, 5A and 10A or 13X). Plain white silica gel, blue indicating silica gel and orange indicating silica gel; montmorillonite clay; activated alumina; activated carbon; calcium oxide and calcium chloride. The type of desiccant that a technical representative will recommend is going to vary by customer specific applications and requirements. Please contact a sorbent specialist for more information here:

What Are Oxygen Absorbers?

Oxygen absorbers or oxygen scavengers as they are also known are designed primarily to prolong the shelf life and viability of products that are sensitive to oxidation, rot, color loss and rancidity. By removing the oxygen in an atmosphere we create an anaerobic environment whereby microorganisms cannot live and grow and also preserve the flavor and color of foods and products as well as preventing rancidity in products that have high oil content.

When used correctly, oxygen scavengers can reduce the oxygen level in an enclosed container to 0.01% thereby giving your product the best possible environment to reside in. As temperature and relative humidity (RH) can both affect the performance of the oxygen absorber sachet, please let a us know if your product is not packaged at an ambient temperature and RH (This is generally considered 73ºF and between 50% and 60% RH). For more technical assistance with oxygen scavengers including low temperature/fast acting meat packaging applications, please contact a specialist at:

Interested in Learning More?

Desiccant Calculator

Use this desiccant calculator to determine the quantity of desiccant you need. Please note: IMPAK recommends this as a starting point, not as a replacement for speaking with one of our trained specialists.

Desiccant Comparison Chart

By comparing the properties and capabilities of each desiccant product, it is possible for you to identify the correct desiccant for your needs and make a clear choice. Use the description and chart on this page to compare desiccants such as molecular sieve, silica, and montmorillonite clay.

Desiccant Selection Guide

When dealing with moisture problems in packaging, a wide array of variables can make it difficult or confusing to develop solutions. These variables can be classified into two main groups:
1) those pertaining to the product, its package, and the environment;
2) the physical and chemical properties of commercially available desiccants.