Guard Column cartridge, Bidentate C18, replacement, 4.0 mm ID x 10 mm long cartridge packed with 4 um, 100 A phase. Cogent TYPE-C Brand. 1 EA.
Additional Info:
The 40018‑PG6 Cogent Bidentate C18™ Guard Column Cartridge is a single replacement guard cartridge designed to protect larger‑ID (3.0, 4.0, and 4.6 mm) Cogent TYPE‑C™ analytical HPLC columns from particulates and strongly retained contaminants that can degrade chromatographic performance or shorten column lifetime.
Each cartridge is packed with Cogent Bidentate C18™ stationary phase (4 µm, 100 Å) and housed in a stainless‑steel tube with stainless‑steel frits, providing mechanical durability and consistent flow characteristics. The phase‑matched TYPE‑C™ chemistry ensures that analytical selectivity, retention, and efficiency are preserved when the guard cartridge is installed.
The cartridge is individually labeled and shipped in a protective black Delrin case to prevent drying, contamination, or physical damage prior to use. This cartridge is used with a compatible Cogent TYPE‑C™ guard column holder, sold separately.
Single cartridges are often preferred when laboratories run multiple analytical methods using different guard phases and want the flexibility to pair specific guard chemistries with specific analytical columns—without committing to a multi‑pack.
Why Use a Single Replacement Guard Cartridge?
Guard cartridges protect analytical columns by trapping:
Undissolved sample particulates
Strongly retained matrix contaminants
Debris that can foul frits or permanently damage column packing
Using a single replacement cartridge allows targeted replacement for individual methods, enabling method‑specific optimization, reduced inventory burden, and minimal system downtime.
Product Details
Internal diameter: 4.0 mm
Length: 10 mm
Particle size: 4 µm
Pore size: 100 Å
Phase: Cogent TYPE‑C™ Bidentate C18™
Housing: Stainless steel tube with stainless‑steel frits
Key Features
Phase‑Matched Guard Protection
Same Bidentate C18™ TYPE‑C™ chemistry as analytical columns
Maintains selectivity and retention behavior
Prevents peak distortion from mismatched guard phases
Designed for Larger‑ID Analytical Columns
Optimized for 3.0, 4.0, and 4.6 mm ID HPLC workflows
Suitable for standard analytical and UV‑based reversed‑phase methods
Durable and Reliable Construction
Stainless‑steel cartridge body and frits
Consistent flow and reliable sealing
Appropriate for routine analytical use
Flexible Purchasing Option
Single‑cartridge format for method‑specific needs
Ideal when multiple guard chemistries are used
Easy replacement using an existing guard holder
Typical Applications
Routine analytical HPLC
UV‑based reversed‑phase chromatography
Method development and validation
TYPE‑C™ reversed‑phase workflows
Analytical column lifetime protection