CUSTOM ITEM: HPLC Column, RP C18, 3um, 4.0mm ID x 150mm Length, 100A. Cogent Brand. 1 EA.
Additional Info:
The 68318‑15P‑4 Cogent RP C18 HPLC Column is designed for maximum‑resolution analytical separations while maintaining reduced solvent consumption, using 3 µm particles and fully double end‑capped C18 bonding to deliver consistent retention, improved efficiency, and dependable results.
Manufactured using high‑purity silica and traditional octadecylsilane (C18) chemistry, this stationary phase:
Uses complete end‑capping to minimize silanol interactions
Improves peak shape for polar and basic analytes
Provides excellent reproducibility and robustness
This column is well suited as both a primary analytical column and an alternate for USP L1 methods requiring 3 µm particle phases.
150 mm Length – Maximum Resolution
Highest resolving power within the 4.0 mm RP C18 range
Maximizes peak capacity for complex mixtures
Ideal for closely related compounds and difficult separations
Best suited when maximum resolution is required over speed
Longer run times compared to 50 mm and 100 mm formats
4.0 mm ID – Solvent‑Saving Analytical Performance
Comparable performance to 4.6 mm ID analytical columns
Reduced mobile phase consumption and waste
Typical flow rate range: ~0.8–1.2 mL/min
Optimal starting range: ~0.85–1.10 mL/min
Benefits:
Lower operating costs
Reduced solvent usage
Compatible with standard HPLC systems
Why Choose RP C18 (3 µm)
Balanced Efficiency & Pressure
Higher efficiency than 5 µm columns
Lower backpressure than sub‑2 µm UHPLC columns
Ideal balance between performance and system compatibility
Reliable Hydrophobic Retention
Strong reversed‑phase retention for hydrophobic and neutral compounds
Excellent for long‑chain fatty acids and similar analytes
USP Method Compatibility
Suitable for USP L1 methods using 3 µm stationary phases
Effective alternate or replacement column
Cogent RP C18™ Advantages
Fully End‑Capped Surface
Minimizes secondary interactions
Improves peak symmetry
Enhances performance for basic analytes
High Purity Silica
Consistent results across runs
Reduced variability and improved reliability
Cost‑Efficient Operation
Lower pressure requirements vs UHPLC columns
Reduced solvent consumption vs larger ID columns
Lower cost per analysis
Typical Applications
Pharmaceutical and QC analysis
Hydrophobic and neutral compound separations
Long‑chain fatty acids
Method development and validation
Complex analytical workflows
USP L1 reversed‑phase methods
Important Usage Notes
Compatible with standard HPLC systems
Monitor pressure when using long gradients or viscous mobile phases
Ideal when maximum resolution is required without UHPLC systems
Best suited for complex separations where shorter columns are insufficient
Made‑to‑Order & Pricing Information
This is a custom, made‑to‑order item.
Orders cannot be canceled once placed
Custom items are non‑returnable