Rtx-1301

Rtx-1301 column

Restek Rtx-1301 GC Columns

Restek Rtx-1301 GC columns are a widely used mid-polarity choice for analyzing volatile and semi-volatile organic compounds (VOCs/SVOCs) across environmental, food, industrial, and forensic applications. The 6% cyanopropylphenyl, 94% dimethylpolysiloxane stationary phase provides balanced selectivity for analyzing polarizable compounds, solvents, halocarbons, alcohols, glycols, ketones, and many regulated contaminants, making Rtx-1301 one of the most versatile phases in the Rtx® family.

Known for their excellent thermal stability and low bleed characteristics, Rtx-1301 columns deliver sharp, symmetrical peak shapes for both polar and nonpolar analytes—even when used in complex matrices or heavy-duty GC workloads. Their robust deactivation chemistry minimizes analyte adsorption and supports high-sensitivity detection in GC and GC-MS workflows.

Rtx-1301 columns are commonly used in methods such as EPA 601/602, 624, 8260, and a variety of VOC profiling workflows. Their predictable retention and strong selectivity for oxygenates, chlorinated solvents, nitro compounds, and polar industrial chemicals make them ideal for laboratories needing a reliable mid-polarity workhorse column.

As an authorized distributor of Restek products, Chrom Tech supplies Rtx-1301 columns in multiple configurations to support both routine and regulatory applications that require dependable, reproducible mid-polar GC performance.
Key Definitions ▸
Mid-Polarity Stationary Phase
A phase that provides increased retention for moderately polar compounds while maintaining compatibility with nonpolar analytes. Rtx-1301 uses 6% cyanopropylphenyl substitution for broad, balanced selectivity.
VOC Analysis
The measurement of volatile organic compounds in water, soil, air, and consumer products. Rtx-1301 is a common GC column used in EPA methods 601/602, 624, and 8260 due to its reliable selectivity.
Oxygenate Selectivity
The ability of a stationary phase to separate alcohols, ketones, ethers, and glycols. Rtx-1301 is well suited for resolving oxygen-containing compounds in environmental and industrial workflows.
Halocarbon & Solvent Analysis
A common application where mid-polarity phases are needed to separate chlorinated solvents, industrial chemicals, and regulated contaminants.
Rtx® Deactivation
Restek’s surface treatment that reduces active sites inside the column, improving peak shape and ensuring accurate quantitation for polar and reactive VOCs.
Frequently Asked Questions ▸
What types of analytes are best suited for Rtx-1301 columns?
Rtx-1301 is ideal for VOCs, oxygenates, chlorinated solvents, alcohols, glycols, ketones, and semi-volatiles requiring mid-polarity retention and reliable peak shape.
Is Rtx-1301 compatible with GC-MS?
Yes. Its low bleed and robust deactivation make it suitable for GC-MS workflows involving both routine and trace-level environmental VOCs and oxygenates.
What methods commonly specify Rtx-1301?
Rtx-1301 is widely used for EPA 601/602, 624, 8260, and general VOC profiling in environmental, industrial, and quality-control workflows.
How does Rtx-1301 compare to Rtx-1701?
Rtx-1301 is slightly less polar than Rtx-1701, offering better performance for VOCs and oxygenates, while Rtx-1701 provides increased polarity for challenging pesticides and multi-functional analytes. Selection depends on analyte polarity and method requirements.