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Adsorbent Selection Guide

General Guidelines for Choosing Carbon Adsorbents
Physical Characteristics of Supelco Carbon Adsorbents
Adsorbent Cross Reference

In addition to the general guidelines presented in the tables below view the technical report titled “A Tool for Selecting an Adsorbent for Thermal Desorption Applications” (1,770Kb pdf - T402025), which highlights the relative differences between the most commonly used adsorbents with the help of color-coded performance charts.


General Guidelines for Choosing Carbon Adsorbents back to top

For multi-bed tubes, use the weaker adsorbent in front of the stronger adsorbent. For example, use Carbopack™ C in front of Carbopack B.

Relative Analyte Size (1) Recommended Materials (listed weakest to strongest)
> C20 Carbotrap™ F, Carbopack F
C12-C20 Carbotrap C, Carbopack C, Carbotrap Y, Carbopack Y
C5-C12 Carbotrap B, Carbopack B
C3-C9 Carboxen™ 1016, Carbotrap X, Carbopack X, Carbopack Z
C2-C5 Carboxen 569, Carbosieve™ G, Carboxen 1000, Carbosieve S-III, Carboxen 1021, Carboxen 1018, Carboxen 1003, Carboxen 1012
(1) Analyte size relative to n-Alkanes. Consider all atoms, not just Carbon. For example, even though 1,2-Dichloroethane is a C2, the two Chlorine atoms give it a relative size between C4 and C5.


Physical Characteristics of Supelco Carbon Adsorbents back to top
Adsorbent BET
surface area1
(m2/g)
Density
(g/mL)
Porosity (cc/g) Micropore
Diameter
(Å)
micro- meso- macro-
Carbotrap graphitized carbon black (20/40 mesh )
Carbotrap F 5 0.69 - - - -
Carbotrap C 10 0.68 - - - -
Carbotrap Y 24 0.45 - - - -
Carbotrap B 100 0.37 - - - -
Carbotrap X 240 0.43 - 0.62 - 100
Carbopack graphitized carbon black (60/80 mesh)
Carbopack F 5 0.64 - - - -
Carbopack C 10 0.68 - - - -
Carbopack Y 24 0.42 - - - -
Carbopack B 100 0.35 - - - -
Carbopack Z 220 0.18 - 1.73 - 255
Carbopack X 240 0.41 - 0.62 - 100
Carbon Molecular Sieve
Carboxen-1016 75 0.40 - 0.34 - -
Carboxen-569 485 0.58 0.20 0.14 0.10 5 - 8
Carboxen- 10212 600 0.62 0.30 - - 5 - 8
Carboxen-10182 675 0.60 0.35 - - 6 - 8
Carbosieve S-III3 975 0.61 0.35 0.04 -  4 - 11
Carboxen-1003 1000 0.46 0.38 0.26 0.28 5 - 8
Carbosieve G 1160 - 0.49 0.02 -  6 - 15
Carboxen-1000 1200 0.48 0.44 0.16 0.25 10 - 12
Carboxen-1012 1500 0.50 - 0.66 - 19 - 21
1 Brunauer, Emmett, Teller (BET) surface area calculations
2 microporous, monoporous carbon sieve
3 closed pore structure


Adsorbent Cross Reference back to top
Adsorbent Supelco Equivalent or Substitute
Ambersorb® 347    Carboxen 564
Anasorb C300 Hopcalite
Anasorb CMS Carboxen 564, Carboxen 1000, Carbosieve S-III
Anasorb CSC Coconut charcoal
Anasorb GCB1 Carbopack B, Carbotrap B
Anasorb GCB2 Carbopack C, Carbotrap C
Anasorb 708 Chromosorb® 108
Anasorb 727 XAD-4
Anasorb 747 Carboxen 564, Carboxen 1000, Carbosieve S-III
Carbograph 1 Carbopack B, Carbotrap B
Carbograph 2 Carbopack C, Carbotrap C
Carbosphere Carboxen 1000
Graphpac-GC Carbopack B, Carbotrap B, Carbopack C Carbotrap C    
Hydrar Hopcalite
Purosieve Carboxen 1000
Spherocarb Carboxen 1000
Tenax® GC Tenax® TA