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20287 Supelco

Carbotrap® Adsorbent

matrix Carbotrap® B, 20-40 mesh, bottle of 10 g



Related Categories Adsorbents, Analytical/Chromatography, Carbotrap Adsorbents, Gas Chromatography (GC), Graphitized Carbon Black (GCB) Adsorbents,
packaging   bottle of 10 g
matrix   Carbotrap® B
particle size   20-40 mesh
pore size   0 Å pore diameter
  ~0 cm3/g macroporosity
  ~0 cm3/g mesoporosity
  ~0 cm3/g microporosity
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 Carbotrap products are a type of GCB adsorbent.
• Particles are 20/40 mesh
• These large particles allow high flow rates without excessive pressure drops

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

Legal Information

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

Safety & Documentation

Safety Information

GHS08  GHS08
Signal word 
Hazard statements 
Precautionary statements 
NONH for all modes of transport
WGK Germany 


Certificate of Analysis

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

Scalable Specialty Carbon Adsorbents for Purification and Recovery Applications

What is a “Specialty Carbon Adsorbent”? A graphic depicting a spherical particle is shown in Figure 1. Controlling pore composition is very important as it determines the adsorption and desorption ch...
William R. Betz, Michael J. Keeler, Michael D. Buchanan
Reporter US Volume 33.2
Keywords: Adsorption, Environmental, Industries, Oxidations, Petrochemical, Pharmaceutical, Purification, Solvents

Related Content

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

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