PRODUCTS Unison Columns Unison UK-Phenyl
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IMTAKT HPLC COLUMN UNISON UK-PHENYL

Acid Resistance and Wide-Polarity Separation, High-Performance C8 Column

IMTAKT HPLC COLUMN UNISON UK-PHENYL

FEATURES

World-class column with a theoretical plate count of 50,000 plates (250x4.6mm)

Broad selectivity range from 100% aqueous to non-aqueous mobile phases

Unique end-capping: basic, acid-resistant, and alkali-resistant

Suitable for the analysis of coordination compounds and complexes

Wide range of column sizes: inner diameter 0.075 - 28mm / length 10-500mm

High-pressure resistance options
(HP: 500bar / 7,500psi / 50MPa, UP: 1,000bar / 15,000psi / 100MPa)

MAIN SPECIFICATIONS

Particle size: 3μm (Unison UK-Phenyl)
5μm (Unison US-Phenyl)
Base material: Fully porous high-purity silica gel
Pore size: 13nm
Ligand: Phenyl group
End-capping: Present (polymeric end-capping)
Target molecular weight: Below 10kDa
pH range: pH 1.5-9
Maximum pressure: 250bar / 3,500psi / 25MPa
HP: 500bar / 7,500psi / 50MPa,
UP: 1,000bar / 15,000psi / 100MPa
USP Code: L11

Unison UK-Phenyl is a reversed-phase column with a phenyl group as the stationary phase. Compared to ODS columns, it provides shorter retention but offers different separation selectivity due to the electrostatic interactions of the conjugated π-electrons on the stationary phase. It excels in distinguishing the electrostatic interactions of substituents, especially in aromatic isomers.

For substances that exhibit coordination interactions, such as complexes, it tends to provide better peak shapes compared to alkyl stationary phases. Additionally, because the phenyl stationary phase has a relatively poor recognition of carbon functional groups, it has a convenient ability to consolidate isomers of branched-chain carbon compounds into a single peak.

Unison UK-Phenyl is expected to be effective for substances that cannot be separated using ODS columns.

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