Grace Catalog 2008

gas chromatography
Graphitized Carbon Blacks
Carbograph Packings
• High speed analysis
• Extremely hydrophobic—ideal for aqueous injections
Equivalent to the Carbopack packings. Carbograph
packings can be modified with a stationary phase giving them
unique selectivities.
Carbograph 1
Equivalent to Carbopack B. It has a surface area of
100m 2 /g. Carbograph 1-TD has a coarse mesh of 20/40
which is suitable for thermal desorption work. Maximum
temperature 500°C.
Carbograph 1SC
Similar to Carbopack BHT, specifically for the separation of
sulfur compounds. It has a mesh of 40/60, and a maximum
temperature of 225°C.
Carbograph 2
Equivalent to Carbopack C. It has a specific surface of
10m 2 /g for the separation of volatile organic compounds.
Carbograph 2-TD has a coarse mesh of 20/40 which
is suitable for thermal desorption work. Maximum
temperature 500°C.
Carbograph
Description Qty. Part No.
Uncoated
Carbograph 1-TD, 20/40, >500°C 15g 1740
Carbograph 1, 60/80, >500°C 10g 1722
Carbograph 1 80/120, >500°C 10g 1724
Carbograph 2-TD, 20/40, >500°C 15g 1745
Carbograph 2, 60/80, >500°C 10g 1726
Carbograph 2, 80/100, >500°C 10g 1728
Carbograph 1-SC, 40/60, 225°C 10g 1734
Coated
1% AT-1000 on Carbograph 1 60/80, 225°C 15g 1733
0.1% AT-1000 on Carbograph 2
15g 1737
80/100, 225°C
4% Carbowax ® 20M on Carbograph 1 DA 15g 17271
80/120, 200°C
0.2% Carbowax ® 1500 on Carbograph 2 15g 1725
60/80, 175°C
0.2% Carbowax ® 1500 on Carbograph 2 15g 1720
80/100, 175°C
5% Carbowax ® 20M on Carbograph
15g 1729
1 AW 80/120, 225°C
6.6% Carbowax ® 20M on Carbograph 1 AW 15g 1731
80/120, 225°C
4% Carbowax ® 20M + 0.8% KOH on
15g 1735
Carbograph 1 60/80, 220°C
0.19% Picric Acid on Carbograph 2
15g 1736
80/100, 120°C
0.8% THEED on Carbograph 2 80/100, 125°C 15g 1942
Graphpac-GC and -GB Packings
• Graphitized carbon
• Inert, non-specific surface
• Unique separation properties
• Optimized phase loading
• Hydrophobic—ideal for aqueous injections
Graphpac-GC has an average surface area of
10–13m 2 /g, while Graphpac-GB has a larger surface area
of 100–110m 2 /g. Both types interact with samples almost
completely by non-specific adsorption. Which results in unique
separations not achievable with fused silica open tubular
(FSOT) capillary columns. Alcohols, hydrocarbons, and acids
are separated in series according to carbon number.
The carbons possess partitioning capabilities as uncoated
packings, use stationary phases to modify the selectivity of
these carbons.
Graphpac
Description Qty. Part No.
Graphpac-GC
0.1% AT-1000, 225°C, 80/100 15g 8542
0.2% Carbowax ® 1500, 175°C, 80/100 15g 8546
0.19% Picric Acid, 120°C, 80/100 15g 8550
0.8% THEED, 125°C, 80/100 15g 8552
Uncoated, 60/80 15g 8536
Uncoated, 80/100 15g 8538
Custom—Specify Phase and % Loading 15g C-2200
Graphpac-GB
1% AT-1000, 225°C, 60/80 15g 8517
4% Carbowax ® 20M + 0.8% KOH Amines, 15g 8519
220°C, 60/80
Uncoated, 60/80 15g 8513
Uncoated, Acid Washed, 60/80 15g 8533
Custom—Specify Phase, Mesh, and % Loading 15g C-2200
Custom, Acid Washed—Specify Phase, Mesh, 15g C-2300
and % Loading
Stock Packed Columns
6ft x 1/8" SS Packed with 0.1% AT-1000, ea 8542PC
225°C, 80/100
6ft x 1/8" SS Packed with 0.2% Carbowax ® 1500, ea 8546PC
175°C, 80/100
7ft x 1/8" SS Packed with 0.19% Picric Acid, ea 85501PC
120°C 80/100
10ft x 1/8" SS Packed with 5% Krytox ® 143°C,
60/80
ea 85222
gc columns | packed
www.discoverysciences.com
255