Zebron ZB-1plus GC Columns
MS Certified “1” Phase
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Zebron ZB-1plus GC Columns
MS Certified “1” Phase
- Very low bleed (MS Certified) phase especially suited to high sensitivity GC-MS
- Extremely inert for active compounds such as drugs, pesticides, or acids and bases
- Improved signal-to-noise ratio for better sensitivity and mass spectral integrity
- Identical selectivity to 100 % dimethylpolysiloxane phases
Recommended Applications:
Acids
Amines
Drugs
EPA Methods (1668)Essential Oils
Flavors & Fragrances
Oxygenates and GROs
PCBsPesticides
Solvent Impurities
Sulfur Compounds (Light)
Diesel Fuel
Overview
Zebron PLUS GC Columns
Improved Inertness, Better Peak Shape, Low Bleed, and Aqueous Stability
Active sites on a GC column’s surface can result in analyte adsorption and degradation, which negatively affect peak shape and response.
To reduce potential surface activity, Zebron PLUS phases (ZB-1PLUS, ZB-5PLUS, ZB-5MSPLUS, and ZB-624PLUS) are designed with a rigorous fused silica deactivation process that improves inertness and peak shapes for troublesome compounds.
Zebron ZB-WAXPLUS is specially designed for 100% aqueous stability, enhanced resolution and better reproducibility.
A. Low bleed phase chemistry
B. Clean, highly inert fused silica surface due to very few active sites
C. Temperature resistant and flexible coating
Equivalent or Better Results
Upgrade to Zebron from any 100 % dimethylpolysiloxane phase:
Agilent® | Restek® | SGE® | Supelco® |
|---|---|---|---|
DB®-1 | Rtx®-1 | BP1 | SPB®-1 |
| DB-1ms | Rtx-1ms | SolGel-1ms™ | SE-30 |
| DB-1ms Ultra Inert | Rtx-1ms | MET-1 | |
| HP-1 | MDN-1 | ||
| HP-1ms | Equity®-1 | ||
| VF-1ms | |||
| CP-Sil 5 CB | |||
| Ultra 1 |
Lower Overall Column Activity
Activity is a key measure of column quality. Zebron ZB-1PLUS columns are aggressively tested to ensure full deactivation. Below is an example of the aggressive QC test mix we use, notice the low tailing for even the most active compounds like 2-ethylhexanoic acid!
Test Conditions for Zebron ZB-1PLUS
Column: | Zebron ZB-1PLUS |
Dimension: | 30 meter x 0.25 mm x 0.25 µm |
Part No.: | |
Injection: | Split 100:1 @ 250 °C, 1.0 µL |
Carrier Gas: | Hydrogen @ 1.18 mL/min (constant flow) |
Oven Program: | 140 °C (Isothermal) |
Detection: | FID @ 325 °C |
Sample:
1. Decane
2. 2-Ethylhexanoic Acid
3. 4-Chlorophenol
4. Naphthalene
5. Tridecane
6. 1-Undecanol
7. Dicyclohexylamine
8. Pentadecane
Lower Column Bleed
We tested the ZB-1PLUS column bleed profile against other “MS” columns on the market – ZB-1PLUS shows the lowest bleed,
even at temperatures up to 360 °C.
Test conditions were stopped at 350 °C for all competitor columns so as not to cause damage to the stationary phase by exceeding their maximum temperature limit.
Column: | As listed |
Dimension: | 30 meter x 0.25 mm x 0.25 µm |
Injection: | Null Injection @ 250 ºC |
Carrier Gas: | Hydrogen @ 100 mL/min (constant flow) |
Oven Program: | 240 °C for 9 min to 280 °C for 6.3 min to 320 °C for 6.4 min to 340 °C for 5.8 min to 350 °C for 5.5 min to 360 °C |
Detection: | FID @ 320 ºC |
Well-Suited for Food & Flavors
Cold Pressed Orange Oil by GC-MS
Column: | Zebron ZB-1PLUS |
Dimension: | 10 meter x 0.10 mm x 0.10 µm |
Part No.: | |
Injection: | Split 120:1 @ 160 °C, 0.2 µL |
Carrier Gas: | Helium @ 0.3 mL/min (constant flow) |
Oven Program: | 60 °C to 130 °C @ 10 °C/min to 280 °C @ 30 °C/min for 3 min |
Detection: | MSD |
Sample:
Sample was 10 % in dichloromethane
1. α-Pinene
2. β-Phellandrine
3. β-Myrcene
4. Octanal
5. 3-Carene
6. Limonene
7. Nonanal
8. Linalool
9. cis-Limonene oxide
10. trans-Limonene oxide
11. Citronellal
12. α-Terpineol
13. Decanal
14. Carvone
15. Neral
16. Geranial
17. α-Cubebene
18. β-Cubebene
19. Dodecanal
20. Valencene
21. Cadinene
22. Nootkatone
Documents
- Brochures: Zebron™ ZB-624PLUS Brochure
- Guide: GC Troubleshooting Quick Reference Guide
- Guide: Zebron GC Column Selection Chart
- Brochures: Zebron Gas Management Brochure
- Supporting Docs: Zebron Gas Filter Selection Tool
- Supporting Docs: Zebron Gas Filter User Guide
- Guide: Analyzing Fats and Oils by GC
- Technical Notes: GCxGC-VUV and GCxGC-FID Analysis of Gasoline, Middle Distillates and Crude Oil Distillation Cuts using Zebron ZB-35HT and ZB-1plus GC Columns (TN-2089)
- Technical Notes: Analysis of 21 Residual Solvent Residues from Cannabis Matrix by FET Headspace on a Zebron ZB-624PLUS GC Column
- Brochures: Zebron PLUS GC Column Product Brochure | Phenomenex
FAQs
Can I pack or re-pack my GC liner with wool?
Though the upfront cost of self-packing your liner may seem attractive, the time and headaches caused by resulting tailing or irreproducible peaks can be sizeable! Self-packed wool fibers commonly break during installation and any existing deactivation on the liner can also be scratched or damaged. Scratches in the deactivation layer are likely to occur when removing wool from the liner or re-packing it with new wool. Also, when wool is forcefully inserted or removed, these scratches could expose active sites, resulting in peak tailing and poor reproducibility. Pre-packed Zebron PLUS liners undergo the deactivation process with the quartz wool already in place, which ensures that any active sites that form during packing are not exposed. Its novel touchless packaging and preinstalled O-ring prevent contamination during installation.
Does the Zebron PLUS liner with wool improve my GC column lifetime?
Yes. Zebron PLUS liners are packed with quartz wool, which serves two purposes: a) Quartz wool promotes homogenous vaporization of analytes and solvent in the inlet to effectively transfer them to the head of the GC column. b) Quartz wool acts as a filter, trapping non-volatile impurities and preventing them from proceeding further into the GC column.
I work with dirty samples which produce a residue on my GC liner after approximately 100 injections. Can I scrub/sonicate my liner and reuse it?
It is not recommended to scrub/sonicate your liners. Residue formation indicates contamination. More specifically, this shows that the sample contains non-volatile impurities, in which case it is recommended to replace your liner rather than clean it. Sonication can alter the liner’s deactivation, and scrubbing can create scratches and active sites. As a result, you can have several chromatography problems such as poor quantitation, analyte breakdown, poor reproducibility, peak asymmetry, etc.
I am using an inert GC column for my analysis, and I still see peak tailing. What could be the reason for this?
For analysis of active compounds, it is crucial to use both a highly inert column and a highly inert liner. The liner is the first place of potential analyte interaction during GC analysis; it is important that your analytes are not adsorbed. Zebron PLUS liners undergo a rigorous deactivation process and are tested for inertness to ensure reliable results when working with highly active compounds such as underivatized acids and active bases.
When facing peak and resolution issues in sample analysis by GC, where is the best place to start?
The inlet is the most common place where problems happen in gas chromatography. This is because: • The inlet is subjected to very high temperatures. • There are multiple consumables involved in the inlet that need routine maintenance. • Some inlet modes, such as splitless injection, are a slow process, meaning that target analytes and the inlet can interact with each other before the sample enters the column.
Can you recommend a GC liner that work best when analyzing dirty samples, samples with wide boiling points, or samples with wide molecular weight?
Analysis of dirty samples, samples with wide boiling points, or samples with wide molecular weights can be enhanced by choosing a Zebron™ PLUS liner with quartz wool. Liners packed with wool can prevent non-volatile compounds from entering the column and improve sample vaporization for a more robust, reproducible analysis.
Manufacturer information: Zebron ZB-1plus GC Columns – Phenomenex (USA). MAS Brand is the official representative of Phenomenex in Egypt.
Specifications for Zebron ZB-1plus GC Columns
| GC Length (m) | 5 or 10 or 12 or 15 or 20 or 25 or 30 or 60 or 40 |
| GC Internal Diameter (mm) | 0.1 or 0.18 or 0.25 or 0.53 or 0.32 or 0.2 |
| GC Film Thickness (µm) | 0.18 or 1 or 0.1 or 0.25 or 0.33 or 0.5 or 0.2 or N/A |
| GC Format | Capillary Column or 5-inch Cage |
| GC Option | Standard or Custom or w/ GUARDIAN 5 m, Custom or w/ GUARDIAN 10 m or w/ GUARDIAN 5 m or F&F |
| Manufacturer | Phenomenex |
| GC Phase | ZB-1plus |
