SKU: H00203-21037

Ultisil XB-Phenyl, 3μm, 4.6×50mm

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Ultisil XB-Phenyl phase is less retentive than conventional C18 or C8 phases, but more retentive than standard cyano phase. Due to their ability to participate in π-π interactions, XB-Phenyl Column may actually be more retentive than C18 or C8 Column towards certain polar aromatic compounds, depending on running conditions. The selectivity for highly polar aromatics, which are poorly retained on alkyl-bonded phases, together with reduced retentivity towards non-polar compounds, make XB-Phenyl an excellent choice for the analysis of complex mixtures of polar and non-polar analytes. Additionally, this bonding phase boasts high surface coverage and exhaustive double end-capping, leading to better performance.

Pairs well with

Ultisil Series HPLC Columns are based on ultra-pure ( purity > 99.999% ) spherical and totally porous silica, unique bonding chemistry and proprietary surface modification techniques, producing excellent peak shape, column efficiency and exceptional lot-to-lot reproducibility. Ultisil column is the best choice for method development, owing to complete bonding chemistries and stable performance.

Features

  • Ultra-pure spherical porous silica, purity > 99.999%
  • High efficiency: theoretical plate > 80000/m
  • Excellent peak symmetry: tailing factor=0.95~1.05
  • Exceptional lot-to-lot reproducibility

SEM Pictures of Ultisil Particles


Trace Amount Metal Contents Test

A useful chromatographic test of trace amount of metal contents in the column is to compare the peak symmetry of one pair of positional isomers, 4,4’-dipyridyl and 2,2’-dipyridyl, and a neutral chelating reagent, 1,2-dihydroxylnaphthalene. 4,4’-dipyridyl, which cannot form chelating complex with metal, is used as a reference. 2,2’-dipyridyl and 1,2-dihydroxylnaphthalene, which are chelating reagents, are sensitive to trace amount metal in silica. When a C18 column based on type A silica or other so-called type B silica with higher metal content is used, the peaks of 2,2’-dipyridyl and 1,2-dihydroxylnaphthalene would tail or even totally disappear.
Ultisil XB-C18 provides good peak shapes in the separation of these three compounds under pH 7.6, which indicates Ultisil silica contains hardly any metals.

Separation of Basic Compounds Antidepressant at pH 7.0

Comparison of Peak Shape between Batch to Batch

Capacity Factor(K’) of Batch to Batch Reproducibility

Brand: Ultisil

Phase: XB-Phenyl

Particle Size: 3μm

Pore Size: 120Å

USP Classification: L11

Separation Mode: Reversed Mode

pH Range: 1.5-10.0

Surface Area: 320m2/g

Carbon Load: 12%

Max.Pressure: 60Mpa

Endcapped: Yes

Max.Temp.: 60°C(pH≤6.5) and 40°C(pH>6.5)

Particle Shape: Spherical

Product Description

Ultisil Series HPLC Columns are based on ultra-pure ( purity > 99.999% ) spherical and totally porous silica, unique bonding chemistry and proprietary surface modification techniques, producing excellent peak shape, column efficiency and exceptional lot-to-lot reproducibility. Ultisil column is the best choice for method development, owing to complete bonding chemistries and stable performance.

Features

  • Ultra-pure spherical porous silica, purity > 99.999%
  • High efficiency: theoretical plate > 80000/m
  • Excellent peak symmetry: tailing factor=0.95~1.05
  • Exceptional lot-to-lot reproducibility

SEM Pictures of Ultisil Particles


Trace Amount Metal Contents Test

A useful chromatographic test of trace amount of metal contents in the column is to compare the peak symmetry of one pair of positional isomers, 4,4’-dipyridyl and 2,2’-dipyridyl, and a neutral chelating reagent, 1,2-dihydroxylnaphthalene. 4,4’-dipyridyl, which cannot form chelating complex with metal, is used as a reference. 2,2’-dipyridyl and 1,2-dihydroxylnaphthalene, which are chelating reagents, are sensitive to trace amount metal in silica. When a C18 column based on type A silica or other so-called type B silica with higher metal content is used, the peaks of 2,2’-dipyridyl and 1,2-dihydroxylnaphthalene would tail or even totally disappear.
Ultisil XB-C18 provides good peak shapes in the separation of these three compounds under pH 7.6, which indicates Ultisil silica contains hardly any metals.

Separation of Basic Compounds Antidepressant at pH 7.0

Comparison of Peak Shape between Batch to Batch

Capacity Factor(K’) of Batch to Batch Reproducibility

Specifications

Brand: Ultisil

Phase: XB-Phenyl

Particle Size: 3μm

Pore Size: 120Å

USP Classification: L11

Separation Mode: Reversed Mode

pH Range: 1.5-10.0

Surface Area: 320m2/g

Carbon Load: 12%

Max.Pressure: 60Mpa

Endcapped: Yes

Max.Temp.: 60°C(pH≤6.5) and 40°C(pH>6.5)

Particle Shape: Spherical

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