HPLC Column, IEX WAX, 10um, 4.0mm ID x 250mm Length, 100A. Cogent Brand. 1 EA. Special Order Item.
Additional Information:
Cogent IEX WAX is a weak anion exchange (WAX) HPLC stationary phase manufactured using high-purity silica and diethylaminopropyl functional groups that provide pH-dependent positive charge characteristics. This weak anion exchange mechanism offers selective retention and separation of negatively charged analytes while allowing greater control of retention through mobile phase pH adjustments. The stationary phase is particularly useful for organic acids, biomolecules, and other anionic compounds and serves as an excellent alternative for USP L9 methods requiring weak anion exchange selectivity.
67090-25P-4 is a 250 mm x 4.0 mm ID analytical column packed with 10 µm WAX particles with a 100 Å pore size. The extended 250 mm length provides increased theoretical plate counts and maximum resolving power for complex ion exchange separations, impurity profiling, purification studies, and challenging analytical applications requiring enhanced separation of closely related anionic compounds. The 10 µm particle size provides low backpressure and supports higher flow rates than smaller particle packings. The 4.0 mm ID format is commonly selected for legacy methods and typically operates at approximately 0.8–2.5 mL/min on conventional HPLC systems.
This USP L9 column is particularly useful for the separation and purification of negatively charged compounds, including organic acids, acidic pharmaceuticals, nucleotides, and other anionic species. The weak anion exchange functionality allows chromatographers to optimize selectivity through pH control while maintaining excellent efficiency and reproducibility. This product is supplied as a Special Order Item manufactured specifically upon receipt of order.
Key Benefits
Weak anion exchange (WAX) stationary phase
Diethylaminopropyl functional groups
pH-dependent retention characteristics
Suitable alternative for USP L9 methods
10 µm particles for lower backpressure
Supports higher flow rates
Maximum resolving power from 250 mm column length
High-purity silica support
Typical Applications
USP L9 methods
Ion exchange chromatography
Organic acid analysis
Acidic pharmaceutical compounds
Biomolecule analysis
Impurity profiling
Purification studies
Quality control testing
Specifications
Product Type: HPLC Column
Stationary Phase: IEX WAX
USP Classification: L9
Chromatography Mode: Weak Anion Exchange
Functional Group: Diethylaminopropyl
Functional pH Range: Approximately pH 5–8
Particle Size: 10 µm
Pore Size: 100 Å
Column Dimensions: 4.0 mm ID x 250 mm
Length: 250 mm
Recommended Flow Rate: 0.8–2.5 mL/min
Brand: Cogent
Special Order Item Information
This item is a Special Order Item manufactured specifically to customer requirements.
Special Order Items cannot be canceled or returned once an order has been placed.
Manufactured upon receipt of order.
May have extended lead times compared to stocked products.
Important Notes
Designed for ion exchange chromatography
Retains negatively charged analytes
Retention can be adjusted through mobile phase pH control
Longer column length provides maximum chromatographic resolution
Lower backpressure compared to smaller particle columns
Supports higher flow rates for routine and preparative methods
Excellent alternative for many USP L9 methods
Special Order Item