Main Products Area : SFC Columns & Accessories

Capillary SFC Phases
Packed Columns
SFC Column Accessories
Miscellaneous

100% methylpolysiloxane
A widely used general purpose column providing high efficiency for hydrocarbons, and non-polar or weakly polar solutes.

5 and 50% phenylmethylpolysiloxane
The replacement of methyl groups in the polymethylsiloxane with phenyl groups confers some polarizability in these phases which gives increased capacity for polar solutes.

30% biphenylmethylpolysiloxane
The enhanced polarizability of this column makes it the first choice for most analytes. The biphenyl phase provides high efficiency, inertness, polarization potential and high sample capacity for most solute classes.

25 and 50% cyanopropylmethylpolysiloxane
The cyanopropyl phases provide the highest polar functionality available for SFC and are therefore particularly useful for separating weakly polar and polarizable compounds.

50% octylmethylpolysiloxane
This phase containing strong alkyl character provides higher capacity for non-polar compounds than the methyl phase as well as showing some significant inertness and resistance to breakdown by agressive samples.

SFC Capillary Column Configuration
SFC capillary columns are 50-µm internal diameter by 195-µm outer diameter. Stationary phases are 0.25-µm thick. Columns are equivalent to columns formerly offered by Dionex,and are delivered with a frit restrictor coupled to the column. The columns are offered in 10-m lengths.

Column Performance
Every Selerity SFC column is individually tested under SFC conditions. The resulting chromatogram with analytical conditions is included with each column to provide a baseline and guarantee of performance.

SFC Capillary Columns Phase Description Selerity Part No Coated Length (m) Equivalent Dionex Part No. SB-Methyl-100 (100% methyl-polysiloxane) AE002 10 015002 SB-Octyl-50 (50% n-Octyl, 50% methylpolysiloxane) AE001 10 015000 SB-Phenyl-5 (5% Phenyl, 95% methylpolysiloxane) AE011 10 216538 SB-Phenyl-50 (50% Phenyl, 50% methylpolysiloxane) AE012 10 216540 SB-Biphenyl-30 (30% Biphenyl, 70% methylpolysiloxane) AE003 10 015008 SB-Cyano-25 (25% Cyanopropyl, 75% methylpolysiloxane) AE004 10 015010 SB-Cyano-50 (50% Cyanopropyl, 50% methylpolysiloxane) AE006 10 015158

Back to Top

Silica Packing
These columns are effective wherever a silica phase is required; however, they were designed to specifically meet the requirements of ASTM Method D5186 for the determination of aromatics in diesel and jet fuels and ASTM Method 6550 for the determination of olefins in gasoline. These 1 mm ID columns provide resolution factors significantly higher than specified by Method D5186. Performance is especially enhanced when used with Selerity's zero dead-volume Secure-FitTM connectors. Each column is individually conditioned and tested under the SFC conditions recommended in Method D5186 and are ready to install in your SFC upon receipt.

Silica Packing Part No. Description AE013 Silica packed column, 5-µm particles, 75-cm, 1/16" OD stainless steel, 1-mm ID. 1/32" end fittings compatible with the Series 3000 capillary system injector fittings. Use with packed column connector kit (CCPC.01) for optimum performance. AE014 Silica packed column, 5-µm particles, 75-cm, 1/16" OD stainless steel, 1-mm ID. 1/16" inlet fitting compatible with 1/16" Valco injector valve fittings, and 1/32" outlet for convenient connection to restriction tubing with fingertight fittings. AE015 Silica packed column, 5-µm particles, 75-cm, 1/16" OD stainless steel, 1-mm ID. 1/16" end fittings for use in the Selerity SFC system with switching valves. AE016 Silica packed column, 5-µm particles, 50-cm, 1/16" OD stainless steel, 1-mm ID. 1/16" end fittings for use in the Selerity SFC system with switching valves.

Back to Top

SFC Restrictors
All Selerity SFC capillary columns are equipped with frit restrictors which are made by casting a porous ceramic section in 50-µm fused silica tubing and are deactivated with siloxane reagents. Individual testing assures performance within the specified flow rate range. We recommend that restrictors be attached to columns using one of the Selerity Column Coupling Kits described below. Restrictors in custom lengths and flow rates are available on request. Please call or e-mail (techsupport@selerity.com) for a quotation.

SFC Restrictors Part No. Description Equivalent Dionex Part No. AE027 Frit restrictor, 1.5 cm/s average velocity for 50-µm ID column at 100°C and 100 atm, 30-cm length, 10 per package 015353 AE009 Frit restrictor, 1.2 cm/s average velocity for 100-µm ID column at 100°C and 100 atm, 30-cm length, 10 per package 015354 AE005 Frit restrictor, 0.5 cm/s average velocity for 50-µm ID column at 100°C and 100 atm, 100-cm length for mass spectrometry applications, 10 per package 015052

Capillary Column Couplers
Coupler Kit CCFT.01 employs a coupling tube enclosed in a stainless steel housing. Column ends are inserted into the quartz coupling tube. The columns are held in place by tightening the end fittings. These connectors are reusable.

Capillary Column Couplers Part No. Description AE024 Column coupling kit, 10 self-guiding quartz tubes and epoxy resin AE025 Column coupling kit includes SS housing, 2 self-guiding quartz tubes, packet of 2 ferrules AE007 Replacement self-guiding quartz tubes for CCFT.01 and CCEP.10 Pack of 5

Packed Column Connector Kit

Column Couplers
This auto-depth spring-loaded connector assures an absolutely tight fit between the 1/32" column and injector valve fittings. Its finger-tight connections make this zero dead-volume connector easy to use with Selerity packed columns. This connector is suitable for any high-pressure connection of 1/32” fittings; it is recommended when using the Selerity C5186.01 column.

Column Couplers Part No. Description AE026 Kit for connecting stainless steel columns with 1/32" and fittings to 1/32" valve fittings. Also contains adapters for 1/16" fittings.

Fused Silica Tubing
Fused silica tubing is available with or without deactivation. Deactivated fused silica has a thin inert polysiloxane wall coating.

Fused Silica Tubing Raw Fused Silica (not Deactivated) Part No. ID (µm) OD (µm) Length (m) AE030 15 150 1 AE033 50 195 20 Deactivated Fused Silica Part No. ID (µm) OD (µm) Length (m) AE033 15 150 1 AE035 50 195 20

Other dimensions are available. Call or go to our contact page for a quotation.

Back to Top

Miscellaneous Part No. Description BF0001 Ferrule reaming tools, for 1/32" column connection ferrules, pack of 2 BF0001 Fused silica cutting tool

Back to Top

Click Here to Request Information