Guard Column Starter Set, Bidentate C8 2.o, complete with 5 each 2.0 mm ID x 10 mm long cartridges packed with 2.2 um, 120 A phase and 1 each guard column holder. Cogent TYPE-C Brand. 1 EA.
Additional Info:
The 40208‑PG1 Cogent Bidentate C8 2.0 Guard Column Starter Set is a complete high‑pressure protection system designed for UHPLC and high‑efficiency analytical methods, where maintaining column integrity is critical.
This starter kit includes:
(1) Stainless steel guard column holder designed for high‑pressure operation
(5) Bidentate C8 2.0 guard cartridges
2.0 mm ID × 10 mm length
Packed with 2.2 µm, 120 Å TYPE‑C™ silica hydride phase
Each cartridge is individually packaged in a protective Delrin™ case to prevent contamination, drying, and physical damage before use.
Designed for 2.1 mm UHPLC Columns
This guard column system is optimized for:
2.1 mm ID analytical and UHPLC columns
Sub‑2 µm particle methods
High‑pressure LC‑MS workflows
Using a properly matched guard column ensures:
Minimal band broadening despite small particle size
Maintained high efficiency and resolution
Consistent chromatographic performance
UHPLC / Sub‑2 µm Protection Requirement
Columns with 2.2 µm particles are more sensitive to:
Particulates and system contamination
Matrix buildup from injections
Irreversible adsorption of analytes
Pressure increases due to blockage
The 40208‑PG1 starter kit provides a critical protection layer, helping to:
Preserve high column efficiency
Prevent rapid pressure buildup
Extend UHPLC column lifetime
Maintain reproducibility in high-resolution methods
In typical usage, the included five cartridges may protect an analytical column for its usable lifetime, depending on sample cleanliness.
Bidentate C8 2.0™ Phase Advantages
This advanced phase is designed for high‑efficiency chromatography, offering:
Reduced hydrophobic retention compared to C18
Improved performance for amine‑containing compounds
Alternative selectivity for complex separations
Fast equilibration even in gradient methods
Cogent TYPE‑C™ Technology Benefits
Silica Hydride Surface
Reduced silanol activity
Improved peak shape for basic analytes
Minimized secondary interactions
High Pressure Stability
Designed for UHPLC and sub‑2 µm workflows
Compatible with elevated system pressures
Stable under demanding analytical conditions
Faster Equilibration
Reduced run‑to‑run cycle time
Increased throughput for high‑efficiency methods
Typical Applications
UHPLC and LC‑MS analytical methods
Pharmaceutical and bioanalytical workflows
High‑resolution separations using sub‑2 µm columns
Complex sample matrices
Methods requiring maximum efficiency and reproducibility