Catalog Number - 68008-PG2

Cogent RP C8 Octyl Guard Column Cartridges are packed with the same high-quality stationary phase used in Cogent RP C8 analytical columns, featuring traditional octyl (C8) silane bonding on high-purity silica with complete double endcapping. These guard cartridges are designed to capture particulates, strongly retained contaminants, and sample matrix components before they reach the analytical column, helping maintain chromatographic performance, extend column life, and reduce replacement costs.

68008-PG2 contains five guard column cartridges packed with 10 µm RP C8 Octyl material featuring a 100 Å pore size in 4.0 mm ID x 10 mm length hardware. Designed for use with 3.0 mm, 4.0 mm, and 4.6 mm ID analytical RP C8 columns, these guard cartridges provide economical protection while maintaining compatibility with routine analytical HPLC methods. The 10 µm particle size and matching stationary phase chemistry help minimize changes in chromatographic selectivity while protecting valuable analytical columns from contamination.

Used in routine analytical HPLC, method development, quality control, and pharmaceutical testing laboratories, these guard cartridges help preserve analytical column efficiency, improve reproducibility, and minimize downtime. The stainless steel cartridge construction incorporates stainless steel frits pressed into durable PEEK frit caps for reliable performance under a wide range of reversed-phase HPLC conditions.

Key Benefits

• Packed with Cogent RP C8 Octyl stationary phase

• Fully double endcapped chemistry

• Traditional octyl (C8) bonded phase

• Protects analytical HPLC columns from contaminants

• Helps maintain column efficiency and reproducibility

• Extends analytical column service life

• 10 µm particles for low operating backpressure

• Stainless steel cartridge construction

• Stainless steel frits with PEEK frit caps

• Supplied as a convenient 5-pack

Typical Applications

• Analytical HPLC

• USP L7 methods

• Method development

• Quality control testing

• Pharmaceutical analysis

• Environmental testing

• Food and beverage analysis

• Routine laboratory testing

• Sample cleanup and column protection

• Reversed-phase HPLC separations

Specifications

• Product Type: Guard Column Cartridges

• Stationary Phase: RP C8 Octyl

• Chromatography Mode: Reversed Phase

• Bonded Phase: Octyl (C8)

• Endcapping: Fully Double Endcapped

• Particle Size: 10 µm

• Pore Size: 100 Å

• Cartridge Dimensions: 4.0 mm ID x 10 mm

• Hardware Material: Stainless Steel

• Frit Material: Stainless Steel with PEEK Frit Caps

• Quantity: 5/PK

• Compatible Column IDs: 3.0 mm, 4.0 mm, and 4.6 mm

• Brand: Cogent

Guard Column Holder Requirement

• A Cogent Guard Column Holder is required for use with these guard cartridges.

• View the Cogent Guard Column Holder (83000-GH)

Important Notes

• Compatible with Cogent RP C8 analytical HPLC columns

• Designed to intercept particulates and contaminants before they reach the analytical column

• Recommended for routine analytical and method development applications

• Replace guard cartridges as needed based on sample cleanliness and application requirements