All AB GC columns are gone through testing with the toughest samples among industrial standards to maintain the highest quality. The published specs in Table III show Abel's confidence in maintaining stringent quality without any compromise. As a result, AB columns have consistent high performance delivered to its end users.
In summary, AB GC columns are carefully made at the highest industrial quality standard. AB GC columns replicate the performances of brand name ones in column selectivity and retention times. AB GC columns are totally inert and have very low column bleeds. They can fit all known applications and may produce improved result over that produced on a brand name column.

In return of using AB GC columns, the end users will experience and benefit:
1) Same or improved separations
Seamless column is shown also by the same or improved separation. Fig 2 is a GC-MS analysis of solvent mix in a drug sample on an AB-Inowax column, 0.25mm x 30m x 0.25um p/n 2025-3002). In addition to the baseline separations of all solvents, this PEG type of AB-Inowax column has very low column bleed, make it be used in GC-MS that quickly identifies all solvent peak at one snap shot.

Fig 2 Solvent separation on AB-Inowax column by GC-MS

Fig 3 is another example of the same separation for simulation distillation.

Fig 3 simulated distillations analysis on AB-1 column

2)Challenging analysis
Challenging analysis that analyzes difficult sample often is done on the highest quality column. EPA 8472 is one example of the challenging analyses. Highest quality column must have right column selectivity, extended temperature limited, low column bleed, highest column plate number, and complete inert surface. AB-5MS is one of the highest quality columns that are able to perform such an analysis.

Fig 4a shows the chromatogram of this analysis. In this application, this AB-5MS column still produces symmetric and sharp peak of 1ppm Benzedine because of its complete inert surface.

Fig 4b shows another example that requires surface inertness, where, AB-5MS column produces symmetric peaks of all strong bases and acids.

Fig 4 AB-5MS. (a) EPA 8270

Fig 4 AB-5MS. (b) EPA 625

Fig 5 shows the separation of residue solvent vapor, isopropyl alcohol and dichloromethane in a pharmaceutical application with head-space technique. In this application, the isopropyl alcohol is eluted before dichloromethane with a resolution of 1.68 on an AB-Inowax column, producing a baseline separation for this critical pair separation.

Fig 5. Isopropyl Alcohol and Dichloromethane separation

Fig. 6 is analysis of impurity in ethylene by an AB-PLOT Al2O3 at 100C. The sample is 99% ethylene and 1% acetylene. Low level of impurities of methane and ethane (around 1ppm) are detected at high temperature 100C, with well separations achieved.

Fig. 6 Impurities in ethylene

3) High performances of difficult-to-make columns
Abel has developed its own innovative and proprietary column technology that enables Abel easily produces many superior columns that are used to difficult to make. Fig 7 demonstrates exceptionally well particle immobilization of AB-PLOT Q columns. In this programmable run, AB-PLOT Q columns was quickly heated to 300C at 15C/min, its baseline exhibits no spike that is often caused by particle dislodging from column coatings

Fig. 7 Immobilization of AB-PLOT Q column

4)Competitive price and complete offer
Abel manufactures complete of AB GC columns, from non-polar, mid polar, to PEG and PLOT stationary phases. Column dimension ranges from 0.20mm to 0.53mm, 1m to 105m and 0.05um to 5um. Table "Abel Bonded Column Offers"(page:26) shows the complete offers of AB GC columns and its approximate/exact replacement of brand name ones.
Additionally, Abel offers complete stationary phase columns with quick delivery. Abel can deliver the stocking items (mostly popular standard columns) within 48 hours after receiving your orders. Abel has had a solid track record to deliver non-stock column within two to four weeks.

AB column prices are 75-90% of the brand name ones. If you order more than two columns, we can further offer you volume discount. This feature will significantly save your cost in this apparent recession year. Please contact Annie_nie@abel-industries.com for any tech support issue. You can order AB GC columns by email to Annie_Nie@abel-industries.com or fax at 1-(604)-677-5866.

Worldwide distributors and OEM are welcome.