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Purospher® STAR RP-18 Endcapped 100-2.1 Hibar® HR UHPLC Column, 120 Å, 2 μm, 2.1 x 100 mm - 150648

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Purospher® STAR RP-18 Endcapped Hibar® 

Inner Diameter (I.D.): 2.1 mm
Length: 100 mm
Package Contents: 1 Column


Purospher® STAR RP-18 endcapped HPLC columns are designed for universal use. Basic, neutral, and metal chelating 
compounds can easily be separated with simple mobile phases – naturally without peak tailing! Thanks to its 
outstanding performance and stability, Purospher® STAR RP-18 endcapped offers maximum flexibility in method 
development. Robust methods can be developed over the entire pH range from 1.5 to 10.5. The high pH-stability up 
to pH 10.5 allows the separation of strongly basic compounds with alkaline eluents. The combination of high purity 
silica, best all-round retention characteristics, outstanding pH stability up to pH 10.5, and suitability for up to 100% 
aqueous mobile phases, make Purospher® STAR RP-18 endcapped an all-round top performance column, almost 
universal in its range of applications.

Available as optimized 2 μm particulate silica, these UHPLC columns based on Purospher® STAR RP-18 endcapped are 
ideal for ultra-fast applications, where resolution, sensitivity and sample throughput are crucial. They are the first 
choice for high-throughput screening & QC analyses, process monitoring, method development, and LC/MS applications. 
Due to its balanced selectivity, Purospher® STAR RP-18 endcapped UHPLC columns cover almost all demanding 
separations with tailing-free chromatograms. The Purospher® STAR RP-18 endcapped 3 μm columns are recommended 
for difficult samples where clogging and back-pressure present an issue.


Purospher® STAR UHPLC columns benefits
  • In UHPLC environment, speed is increased by a factor of 10
  • Solvent consumption is drastically cut (up to 85%)
  • Excellent peak shape for all types of acidic, basic and metal chelating analytes due to high purity silica
  • Extraordinary pH stability from pH 1.5 – 10.5 for an extremely wide application range
  • Enhanced sensitivity due to improved signal-to-noise ratio

Specification of Hibar® HR Purospher® STAR RP-18 endcapped

Sorbent characteristics: High purity C18-modified silica with endcapping 
Particle shape: spherical
Particle size: 2 μm and 3 μm
Pore size: 12 nm (120 Å)
Pore volume: 1.1 mL/g
Specific surface area: 330 m²/g
Carbon load: 17% C
Coverage of the surface: 3 μmol/m²
Efficiency: 2 μm > 180,000 N/m | 3 μm > 130,000 N/m
pH range: pH 1.5 - 10.5
Pressure stability: 600 bar

  • Model: 1.50648.0001
  • Manufactured by: Merck Chemicals

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