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Purospher® STAR RP-8 Endcapped 125-4 Hibar® RT HPLC Column, 120 Å, 5 μm, 4 x 125 mm - 150033

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Purospher® STAR RP-8 Endcapped Hibar® RT

Inner Diameter (I.D.): 4 mm
Length: 125 mm
Package Contents: 1 Column


Purospher® STAR RP-8 endcapped, like Purospher® STAR RP-18 endcapped, is based on high purity silica and an almost 
complete surface coverage. Thus, Purospher® STAR RP-8 provides excellent peak symmetry for acidic, basic and 
even chelating compounds, highest column efficiency in terms of the number of theoretical plates, and exceptional 
stability from pH 1.5 to 10.5.

In additon, Purospher® STAR RP-8 endcapped columns offer a wide applicability. As the sorbent is less hydrophobic 
than Purospher® STAR RP-18 endcapped, analytes will typically elute faster on the C8 phase. Purospher® STAR RP-8 
endcapped provides enhanced selectivity for positional isomers, and symmetrical peak shapes for strongly basic and 
polar compounds. Like all other Purospher® HPLC columns, Purospher® STAR RP-8 endcapped columns are available in 
a large number of different hardware formats.

Purospher® STAR RP-8 endcapped benefits
  • Enhanced selectivity for positional isomers
  • Excellent peak symmetry for polar and basic compounds

Specification of Purospher® STAR RP-8 endcapped

Sorbent characteristics: High purity C8-modified silica gel with endcapping
Metal content: Na, Ca, Mg, Al: 1 ppm; Fe: 3 ppm
Particle shape: spherical
Particle size: 3 μm and 5 μm
Pore size: 12 nm (120 Å)
Pore volume: 1.1 mL/g
Specific surface area: 330 m²/g
Carbon load: 17%
Efficiency: 3 μm > 130,000 N/m | 5 μm > 80,000 N/m
pH range: pH 1.5 - 10.5
Shipping eluent: Acetonitrile/Water


  • Model: 1.50033.0001
  • Manufactured by: Merck Chemicals

Product 85/101

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