Restek General Performance

Restek General Performance column

Restek Rtx® General-Performance GC Columns

Restek Rtx® general-performance GC columns provide a comprehensive portfolio of reliable, application-proven phases engineered for robust, day-to-day chromatographic workflows across environmental, food and beverage, forensic, petrochemical, industrial, and pharmaceutical laboratories. With a broad range of polarities, stationary-phase chemistries, and high-quality deactivation treatments, Rtx® columns offer consistent retention behavior, excellent inertness, and dependable performance for both GC and GC-MS methods.

The Rtx® family encompasses widely used stationary phases—from classic nonpolar and mid-polar polysiloxanes to highly selective polar, amine-deactivated, and specialty phases—enabling reliable separations of volatiles, semi-volatiles, fatty acid methyl esters (FAMEs), pesticides, industrial solvents, alcohols, aldehydes, glycols, and numerous regulated analytes. Popular phases include Rtx-1301, Rtx-1701, Rtx-200, Rtx-225, Rtx-2330, Rtx-35, Rtx-35 Amine, Rtx-5 Amine, Rtx-50, Rtx-624, Rtx-65, Rtx-BAC, Rtx-Biodiesel TG, Rtx-Volatiles, Rtx-5, Rtx-5MS, Rtx-CLPesticides, Rtx-Wax, Stabilwax®, Stabilwax-DA, Stabilwax-DB, and Stabilwax-MS.

Each column is manufactured using Restek’s proven fused-silica technology and Rtx® deactivation protocols, ensuring low bleed, outstanding lot-to-lot reproducibility, and long-term stability. Whether optimizing separation selectivity, improving method sensitivity, or meeting regulatory requirements, Rtx® columns provide reliable chromatographic performance for routine and specialized applications.

As an authorized distributor of Restek products, Chrom Tech supplies the complete Rtx® general-performance column lineup—offering dependable, versatile solutions for laboratories seeking consistent, high-quality, application-focused GC separations.
Key Definitions ▸
General-Performance GC Column
A category of GC columns designed for dependable, routine separations across a broad spectrum of compound classes, offering balanced inertness, selectivity, and stability for everyday laboratory use.
Stationary Phase Polarity
A measure of how strongly a GC stationary phase interacts with analytes. Rtx® columns are available in nonpolar, mid-polar, and polar chemistries to target specific compound classes and separation needs.
Amine-Deactivated GC Columns
Columns chemically treated to reduce interactions with basic compounds such as amines, providing improved peak shape and recovery for nitrogen-containing analytes.
Wax (PEG) Columns
Highly polar polyethylene glycol phases (e.g., Rtx-Wax, Stabilwax®) used for alcohols, solvents, flavor compounds, FAMEs, and other polar analytes requiring strong polarity-based separation.
Low-Bleed Column Technology
Advanced deactivation and polymer stabilization that reduces stationary-phase bleed, resulting in cleaner mass spectra, improved sensitivity, and enhanced column lifetime—critical for GC-MS workflows.
Frequently Asked Questions ▸
What types of applications are Rtx® general-performance columns best suited for?
Rtx® columns are ideal for volatiles, semi-volatiles, solvents, alcohols, amines, pesticides, hydrocarbons, glycols, FAMEs, and a wide range of environmental and industrial analytes.
Are Rtx® columns compatible with GC-MS workflows?
Yes. Many Rtx® phases—including Rtx-5MS, Rtx-CLPesticides, and Stabilwax-MS—are designed with ultra-low bleed characteristics for enhanced MS sensitivity and spectral clarity.
How do I choose the right Rtx® stationary phase for my method?
Selection depends on analyte polarity, volatility, and regulatory method requirements. Chrom Tech can help identify the optimal phase—nonpolar (Rtx-1, Rtx-5), mid-polar (Rtx-1301, Rtx-1701), selective (Rtx-225, Rtx-2330), or polar PEG (Stabilwax)—based on your application.
Are Rtx® columns suitable for validated and regulated methods?
Yes. The Rtx® lineup includes phases widely used in EPA, ASTM, EN, AOAC, and USP workflows, with excellent lot-to-lot reproducibility to support validated methods.