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20273 Supelco

Carbopack Adsorbent

matrix Carbopack B, 60-80 mesh, bottle of 10 g



Related Categories Adsorbents, Analytical/Chromatography, Carbon, Carbopack Adsorbents, GC Supports,
Quality Level   100
form   granular
packaging   bottle of 10 g
matrix   Carbopack B
particle size   60-80 mesh
pore size   ~0 cm3/g macroporosity
  ~0 cm3/g mesoporosity
  ~0 cm3/g microporosity
  ~0 Å pore diameter
surface area   ~100 m2/g
density   ~0.38 g/mL (free fall density)


General description

A graphitized carbon black (GCB) can be non-porous or porous. The graphitization process results in a highly pure surface with great adsorption and desorption (if required) properties. Surface interactions depend solely on dispersion (London) forces. These particles are:
• Granular
• Friable
• Used for molecules with an analyte size relative to C3-C20+ n-alkanes
• Hydrophobic (can be used in high humidity environments)

Generally, GCB adsorbents offer weaker relative adsorptive strength compared to carbon molecular sieve (CMS) adsorbents, and similar relative adsorptive strength compared to spherical graphitized polymer carbon (SGPC) adsorbents. Our Carbopack products are a type of GCB adsorbent.
• Particles are 40 mesh and smaller
• Use 40/60 mesh to prevent channeling (if observed with a 20/40 mesh Carbotrap® adsorbent)
• Use smaller mesh (60/80, 80/100, etc.) for all other applications
• Use the smallest particle size available as long as the application can handle the pressure drop

For more information about any of our specialty carbon adsorbents, please visit sigma-aldrich.com/carbon

Legal Information

Carbopack is a trademark of Sigma-Aldrich Co. LLC

Carbotrap is a registered trademark of Sigma-Aldrich Co. LLC

Safety & Documentation

Safety Information

GHS08  GHS08
Signal word 
Hazard statements 
NONH for all modes of transport
WGK Germany 
Flash Point(F) 
Not applicable
Flash Point(C) 
Not applicable


Certificate of Analysis (COA)

Please Enter a Lot Number

Frequently Asked Questions

Which document(s) contains shelf-life or expiration date information for a given product?
If available for a given product, the recommended re-test date or the expiration date can be found on the Certificate of Analysis.
How do I get lot-specific information or a Certificate of Analysis?
The lot specific COA document can be found by entering the lot number above under the "Documents" section.
What is Product No. 20273Carbopack B?
Carbopack B is a graphitized carbon black (GCBs) whcih has been prepared for use in gas-solid chromatographic separations of light hydrocarbons and other volatile gases. Carbopack B has a surface area of 100 meters2/gram and meets the requirements of USP code S12.
Can 20273 Carbopack B be used as an Air Monitoring Adsorbent?
Yes - Carbopack B traps many Airborne C4-C8 compounds.
What does the term "mesh" mean?
The mesh number refers to the number of wires in a screening process. The larger the mesh size the smaller the particle size. 60/80 mesh allows a particle size range of 180-250um.
Is this product a packed column?
This is packing material only; it is not a column. Some endusers will purchase this bottle of packing and prepare their own packed columns.
How can I purchase a column that is packed with this material?
Most packed column are custom made and require that you obtain a quotation. Please contact ourCustomer & Sales Servicesgroup at phone number (800)-247-6628, fax number (800)-447-3044 or email CIBelle@sial.com for additional information.
How do I find price and availability?
There are several ways to find pricing and availability for our products. Once you log onto our website, you will find the price and availability displayed on the product detail page. You can contact any of our Customer Sales and Service offices to receive a quote. USA customers: 1-800-325-3010 or view local office numbers.
What is the Department of Transportation shipping information for this product?
Transportation information can be found in Section 14 of the product's (M)SDS.To access the shipping information for this material, use the link on the product detail page for the product.
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Ask a Scientist here.
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Protocols & Articles


Carbon Adsorbents: Physical Characteristics and Selection Guide

The following information is gathered to assist chemists and method developers in locating the proper specialty carbon adsorbent for their use. Additional assistance can be obtained by contacting our...
Keywords: Adsorption, Air Monitoring, Gas chromatography

High Purity Carbon Adsorbents for Sample Preparation and Chromatographic Applications

The first high purity Supelco® carbon adsorbents were made for gas chromatographic packed columns. Then, specialty carbons were developed for thermal desorption tubes followed by the introduction of ...
Keywords: Adsorption, Air sampling, Chromatography, Diffusion, Flame ionization detector, Gas chromatography, High performance liquid chromatography, Passive sampling, Pesticides, Phase transitions, Purification, Sample preparations, Separation, Solid phase extractions, Solid phase microextractions, Thermal conductivity detector

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Choosing the Right Adsorbent for Your Thermal Desorption Gas Chromatography Applications [VIDEO]

This webinar provides an overview of adsorbents that are suitable for thermal desorption (TD), and the factors you need to consider when selecting an adsorbent. The presentation provides details abou...
Keywords: Sample preparations

Peer-Reviewed Papers


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