Catalog Number - 59052-15P

MicroBee Phenyl™ is a traditional phenyl-bonded HPLC stationary phase designed to provide selectivity that differs from conventional C18 columns. As part of the Cogent™ Similars product line, it has been a trusted value-oriented option for laboratories using established phenyl methods for many years. The fully endcapped phenyl bonded phase is attached to Type-A silica and is particularly useful for aromatic compounds where π-π interactions can provide selectivity advantages over standard alkyl phases.

59052-15P is a 150 mm x 4.6 mm ID analytical column packed with 10 µm, 125Å MicroBee Phenyl particles. The 150 mm length provides an excellent balance of chromatographic efficiency and analysis time, making it well suited for routine testing, method development, and quality control applications. The industry-standard 4.6 mm ID format typically operates optimally at flow rates of approximately 1.0–2.0 mL/min on conventional HPLC systems.

This USP L11 column is an excellent alternative for methods developed on Microbondapak™ Phenyl and similar phenyl stationary phases. The phenyl functionality offers enhanced retention and selectivity for aromatic, conjugated, and structurally related compounds while maintaining the versatility needed for a wide range of reversed-phase separations. It is often selected during method development when C18 columns do not provide adequate resolution between closely related analytes.

Key Benefits

• Fully endcapped phenyl stationary phase

• Suitable alternative for USP L11 methods

• Enhanced selectivity for aromatic compounds

• Different retention characteristics than C18 columns

• Balanced resolution and run time

• 125Å pore size for broad analyte compatibility

• Cost-effective Cogent Similars column

• Compatible with legacy phenyl methods

Typical Applications

• USP L11 methods

• Reversed-phase HPLC

• Aromatic compound analysis

• Pharmaceutical analysis

• Quality control testing

• Method development

• Isomer separations

• Alternative selectivity screening

Specifications

• Product Type: HPLC Column

• Stationary Phase: MicroBee Phenyl

• USP Classification: L11

• Particle Size: 10 µm

• Particle Type: Type-A Silica

• Bonded Phase: Phenyl

• Endcapped: Yes

• Pore Size: 125Å

• Column Dimensions: 4.6 mm ID x 150 mm

• Length: 150 mm

• Recommended Flow Rate: 1.0–2.0 mL/min

• Brand: Cogent

Important Notes

• USP L11 column classification

• Fully endcapped phenyl stationary phase

• Compatible with conventional HPLC systems

• Industry-standard 4.6 mm ID analytical format

• Suitable for aromatic and conjugated compounds

• Alternative selectivity to traditional C18 phases

• Excellent replacement for many legacy phenyl methods

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