CUSTOM ITEM: HPLC Column, RP C18, 5um, 4.0mm ID x 50mm Length, 100A. Cogent Brand. 1 EA.
Additional Info:
The 68518‑05P‑4 Cogent RP C18 HPLC Column is a robust, reversed‑phase column designed for reliable analytical performance, featuring 5 µm particles and fully double end‑capped C18 bonding.
Manufactured using high‑purity silica with traditional octadecylsilane (C18) bonding, this stationary phase:
Uses complete end‑capping to minimize silanol activity
Improves peak shape for polar and basic analytes
Provides consistent, reproducible chromatography
This column is ideal as a USP L1 alternate column and a dependable choice for routine analytical methods.
50 mm Length – Fast Analysis & Throughput
Designed for rapid separations and short run times
Lower backpressure relative to longer columns
Ideal for high‑throughput screening and method development
Suitable for routine and fast analytical workflows
4.0 mm ID – Solvent‑Saving Analytical Performance
Comparable chromatographic behavior to 4.6 mm ID columns
Uses less mobile phase, reducing cost and waste
Typical flow rate range: ~0.8–1.2 mL/min
Optimal starting range: ~0.9–1.1 mL/min
Benefits:
Lower solvent consumption
Reduced operating cost
Fully compatible with standard HPLC systems
Flow Rate & System Requirements (4.0 mm ID, 5 µm)
Typical flow rate range: ~0.8–1.5 mL/min
Optimal starting range: ~0.9–1.2 mL/min
✅ Operates under standard high‑pressure HPLC conditions ✅ Produces lower backpressure than 3 µm and 1.8 µm columns, while remaining a high‑pressure analytical column
Why Choose RP C18 (5 µm)
High‑Pressure Robustness & Reliability
Designed for standard high‑pressure HPLC systems
Lower backpressure relative to smaller particles
Ideal for rugged, repeatable analytical methods
Reliable Hydrophobic Retention
Strong reversed‑phase retention for hydrophobic and neutral compounds
Excellent for long‑chain fatty acids
Provides greater retention than C8 phases
USP Method Compatibility
Suitable for USP L1 methods using 5 µm particle columns
Reliable alternate or replacement column
Cogent RP C18™ Advantages
Fully End‑Capped Surface
Minimizes secondary interactions
Improves peak symmetry
Better performance for basic analytes
High Purity Silica
Consistent chromatography
Reliable reproducibility
Durable & Cost‑Efficient
Longer column lifetime vs smaller particle sizes
Reduced system strain
Lower maintenance requirements
Typical Applications
Pharmaceutical and QC analysis
Hydrophobic and neutral compound separations
Long‑chain fatty acids
Routine analytical HPLC workflows
Method development
USP L1 reversed‑phase methods
Important Usage Notes
Operates under standard high‑pressure HPLC conditions
Compatible with conventional HPLC systems
Ideal for robust, long‑lifetime methods
Chosen when reliability and system compatibility are prioritized over maximum efficiency
Made‑to‑Order & Pricing Information
This is a custom, made‑to‑order item.
Orders cannot be canceled once placed
Custom items are non‑returnable