CP-Select 624 CB

CP-Select 624 CB column

Agilent CP-Select 624 CB GC Columns

Agilent J&W CP-Select 624 CB columns are engineered to deliver exceptional reproducibility, stability, and low-bleed performance for the analysis of volatile organic compounds (VOCs) across environmental, pharmaceutical, and industrial testing applications. Built on the proven 6% cyanopropyl, 94% dimethylpolysiloxane 624 phase, CP-Select 624 CB offers the same trusted selectivity as traditional 624 columns while providing significantly enhanced performance characteristics.

This highly reproducible 624 phase is synthesized and fully characterized to achieve outstanding column-to-column consistency—ensuring reliable retention times, predictable compound resolution, and dependable performance across routine and regulatory workflows. CP-Select 624 CB also features a dramatically reduced bleed profile, delivering two to three times lower bleed than conventional 624 columns. For example, its stringent bleed specification for a 30 m × 0.53 mm, 3.00 Âµm df column is just 9 pA, supporting cleaner baselines and higher sensitivity in GC and GC/MS applications.

As an authorized distributor of Agilent chromatography supplies, Chrom Tech offers CP-Select 624 CB as a premium low-bleed solution for laboratories requiring exceptional reproducibility, stability, and method compliance in VOC analysis.
Key Definitions â–¸
CP-Select 624 CB
A high-performance 624-phase GC column engineered for volatile organic compound analysis. CP-Select 624 CB provides exceptional reproducibility and significantly lower bleed compared to conventional 624 columns.
6% Cyanopropyl / 94% Dimethylpolysiloxane Phase
The stationary phase composition of the 624 family of columns, offering mid-polar selectivity ideal for separating alcohols, ketones, esters, halogenated solvents, and other VOCs in environmental and industrial applications.
Low Column Bleed
The reduced release of stationary phase components at elevated temperatures, resulting in cleaner baselines, higher MS sensitivity, and improved long-term column performance. CP-Select 624 CB delivers two to three times lower bleed than conventional 624 columns.
Column-to-Column Reproducibility
The degree to which performance characteristics—such as retention times, efficiency, and selectivity—remain consistent from one manufactured column to another. CP-Select 624 CB is synthesized and fully characterized to ensure maximum reproducibility across production lots.
Frequently Asked Questions â–¸
How does CP-Select 624 CB differ from a standard 624 GC column?
CP-Select 624 CB maintains the same mid-polar 624 stationary phase but offers significantly lower bleed and superior column-to-column reproducibility. This results in cleaner baselines, higher sensitivity for GC/MS VOC analysis, and more predictable retention behavior.
What applications benefit most from CP-Select 624 CB?
CP-Select 624 CB is ideal for purge-and-trap VOC analysis, environmental testing, residual solvent workflows, and any application requiring consistent, reproducible retention and low background bleed for high-sensitivity GC or GC/MS detection.
Why is low bleed important for VOC analysis?
Low bleed reduces background noise and improves signal-to-noise ratios, which is essential for accurate quantitation of low-level VOCs. The extremely low bleed of CP-Select 624 CB supports stable baselines and enhanced MS sensitivity, especially in trace-level workflows.