Zebron ZB-624plus GC Columns
The Next Generation of GC Inertness
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Zebron ZB-624PLUS GC Columns
The Next Generation of GC Inertness
Zebron ZB-624PLUS is the optimal choice for the analysis of volatile compounds for Environmental, Pharmaceutical, Food, Cannabis, and Specialty Chemicals. The superior “Plus” deactivation process enhances peak shape, improves signal-to-noise levels and increases sensitivity for qualitative and quantitative analysis of active compounds. Upgrade your existing 624 phase to Zebron ZB-624PLUS GC columns and get all the analytical benefits of proven inertness.
- Enhanced Peak Shape with Superior Deactivation
- Increased Sensitivity for High Boiling Solvents
- Extremely Low Bleed for GC-MS
- High Temperature Stability (300/320 ˚C)
Upgrade to Zebron from these similar* phases:
Agilent® | Restek® |
|---|---|
| CP-Select 624 CB | Rxi®-624Sil MS |
| DB-624UI Ultra Inert |
Overview
The Next Generation of GC Inertness
Recommended For: | ||
|---|---|---|
| Cannabis | EPA Method 8260 | Flavors and Fragrances |
| Terpenes | EPA Method 524 | Solvent Purity |
| Residual Solvents | EPA Method 624 | Alcohols |
| Volatile Amines | Food |
Meet your Zebron ZB-624PLUS GC Column
What makes the PLUS in ZB-624PLUS?
Low Bleed | Engineered Self Cross-linking™ (ESC) provides high thermal stability with maximum column temperatures up to 300/320 ˚C |
Enhance Inertness | Proprietary superior deactivation gives great peak shape for troublesome compounds. |
High Selectivity | A G43 phase that’s highly selective for polar, non-polar, low and high boiling solvents. |
Column-to-Column | Excellent column-to-column reproducibility well suited for validated methods. |
Temperature Limits | Push the temperature limits of traditional 624 and elute/bake high boiling analytes at 300/320 °C. |
Low Bleed = Better Signal-to-Noise Ratio = Lower Detection Limits
The low bleed character of ZB-624PLUS™ columns is the result of advances in cross-linking manufacturing processes that we established for these columns.
With ZB-624PLUS™, your GC column undergoes proprietary cross-linking process to get extensive Engineered Self Cross-linkage (ESC™).
Improved Peak Shape of Volatile Amines
Volatile amines are challenging analytes for GC analysis. They can adsorb to even the smallest imperfections in fused silica. ZB-624PLUS™ undergoes a superior deactivation process which minimizes active compound adsorption leading to gains in Peak response and shape
Comparison of Volatile Amines on Various 624 Columns
GC Conditions for all separations:
Column: | Zebron ZB-624PLUS |
Dimension: | 30 meter x 0.32 mm x 1.8 µm |
Detector: | FID @ 250 °C |
Part No.: | 7HM-G040-31 (ZB-624PLUS) |
Injection: | Split 20:1 1 µL @ 140 °C, |
Recommended Liner: | Zebron PLUS Liner Straight Z-Liner™ |
Liner Part No.: | AG2-0A03-05 (for Agilent & Thermo Scientific® systems) |
Carrier Gas: | Helium @ 1.8 mL/min (constant flow) |
Oven Program: | 50 °C for 1 min, to 200 °C @ 20 °C/min for 5 min |
Sample:
- Isopropylamine
- Diethylamine
- Triethylamine
Exceeding USP <467> System Suitability
USP <USP> method requires resolution of 1.5 for critical pairs. Zebron™ ZB-624PLUS™ took the challenge and succeeded.
Column: | Zebron ZB-624PLUS |
Dimension: | 30 meter x 0.32 mm x 1.80 µm |
Detector: | FID @ 250 °C |
Part No.: | 7HM-G040-31 |
Injection: | Split 5:1 1 µL @ 140 °C, |
Recommended Liner: | Zebron PLUS Straight Z-Liner™ |
Liner Part No.: | AG2-0A03-05 (for Agilent & Thermo Scientific® systems) |
Carrier Gas: | Helium @ 2.2 mL/min (constant flow) |
Oven Program: | 40 °C for 20 min to 240 °C @ 10 °C/min |
Documents
- Guide: GC Troubleshooting Quick Reference Guide
- Guide: Zebron GC Column Selection Chart
- Brochures: Chemical Industry LC & GC Separation Solutions Guide
- Brochures: Zebron Gas Management Brochure
- Supporting Docs: Zebron Gas Filter User Guide
- Brochures: Phenova CRMs for Environmental Analysis Brochure
- Brochures: Application Handbook, Chromatography Solutions for API Manufacturers
- Brochures: GC FAQ - Troubleshooting Highlights from Webinar
- Supporting Docs: Zebron Gas Filter Selection Tool
- Technical Notes: VOCs by GC on ZB-624 PLUS | Phenomenex
- Technical Notes: Volatile Amine Analysis Using a Zebron ZB-624PLUSGC Column
- Technical Notes: Analysis of 20 Terpenes in Cannabis by GC-FID using Zebron ZB-624PLUS GC Column
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.
Is there a way I can get immediate help with my current and upcoming method?
Absolutely, we're always here to help! You can easily get in contact with our team members by clicking contact us on the menu or better yet, just head to www.phenomenex.com/chatnow and we'll help you out with method recommendations and tips.
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-624PLUS GC Columns – Phenomenex (USA). MAS Brand is the official representative of Phenomenex in Egypt.
Specifications for Zebron ZB-624plus GC Columns
| GC Length (m) | 20 or 30 or 60 or 75 |
| GC Internal Diameter (mm) | 0.18 or 0.25 or 0.32 or 0.53 |
| GC Film Thickness (µm) | 1 or 1.4 or 1.8 or 3 |
| GC Format | Capillary Column or 5-inch Cage |
| GC Option | Standard or Custom |
| Manufacturer | Phenomenex |
| GC Phase | ZB-624plus |
