Rtx-1

Rtx-1 column

Restek Rtx-1 GC Columns

Restek Rtx-1 GC columns feature a low-polarity, 100% dimethylpolysiloxane stationary phase engineered for exceptional inertness, thermal stability, and reproducibility across a broad range of gas chromatography applications. As one of the most versatile general-purpose GC columns available, Rtx-1 delivers predictable, linear retention behavior for nonpolar and moderately polar compounds, making it an ideal workhorse phase for routine and research-grade separations.

Rtx-1 columns are widely used in environmental monitoring, petrochemical analysis, forensics, flavor and fragrance testing, industrial chemical workflows, and high-temperature applications requiring robust performance. The phase’s low bleed characteristics support GC-MS workflows by improving mass spectral clarity and enabling trace-level quantitation.

Restek’s advanced deactivation produces sharp peak shapes even for slightly reactive analytes, minimizing adsorption and maximizing repeatability. High-temperature stability makes Rtx-1 suitable for the elution of high-boiling compounds, while consistent column-to-column reproducibility supports validated and regulated laboratory methods.

Chrom Tech, as an authorized distributor of Restek GC products, provides Rtx-1 columns in a wide selection of dimensions for laboratories needing a reliable, rugged, and universally applicable GC phase for routine and advanced analyses.
Key Definitions ▸
100% Dimethylpolysiloxane Phase
A low-polarity stationary phase used for general-purpose GC separations, providing predictable retention behavior and broad applicability across nonpolar analytes.
Low Bleed
Minimal stationary-phase off-gassing at high temperatures, improving GC-MS sensitivity, reducing background noise, and supporting trace-level detection.
High-Temperature Stability
The ability of the phase to maintain performance under elevated oven temperatures, necessary for eluting heavy or high-boiling analytes.
Inertness for Reactive Compounds
Restek’s deactivation minimizes adsorption and tailing, ensuring accurate quantitation for moderately reactive compounds that might otherwise degrade or interact with active sites.
General-Purpose GC Phase
A stationary phase engineered to support a wide variety of applications, reducing the need for multiple specialized columns in multi-disciplinary labs.
Frequently Asked Questions ▸
What types of applications are best suited for Rtx-1 columns?
Rtx-1 is commonly used for environmental, petrochemical, flavor and fragrance, forensics, and industrial chemical testing, as well as any workflow requiring a stable, low-polarity phase.
Is Rtx-1 appropriate for GC-MS?
Yes. Its low bleed and strong thermal stability make it well suited for GC-MS, especially for trace-level analysis.
Are Rtx-1 columns a good choice for high-boiling compounds?
Yes. Their high-temperature tolerance supports elution of heavier, less volatile analytes while maintaining stable performance.
Why choose a 100% dimethylpolysiloxane phase over a more polar GC phase?
It offers broad applicability, straightforward retention behavior, and strong stability—making it ideal for general-purpose GC when no specific polar selectivity is required.