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Purospher® STAR RP-18 Endcapped 100-3 LiChroCART® HPLC Cartridge, 120 Å, 5 µm, 3 x 100 mm - 150625

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Purospher® STAR RP-18 Endcapped LiChroCART®

Inner Diameter (I.D.): 3 mm
Length: 100 mm
Package Contents: 1 Cartridge


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.

With LiChroCART® cartridges the user works with re-usable endfittings which fit different cartridge lengths. 
the cartridges may be changed within the shortest possible time. Changing a separation cartridge from a length 
of 125 to 250 mm and back presents no problems. Furthermore, the adaptation of internal diameter (3 mm or 2 mm) 
to the analysis problem is possible within a few minutes. The endfittings are designed to allow the cartridges to be 
hand-sealed at normal working pressures of 150 to 200 bar without the need for any tools. Only at higher pressures 
may further tightening with a wrench become necessary.


Purospher® STAR RP-18 endcapped benefits
  • Highest silica purity (99.999%) for excellent peak symmetry
  • High separation efficiency
  • Absolutely reproducible results from run-to-run and from batch-to-batch
  • Best all-round performance according to Tanaka
  • Outstanding pH-stability from pH 1.5 - 10.5
  • No phase collapse when using highly aqueous mobile phases
  • Good suitability for LC-MS applications

Specification of Purospher® STAR RP-18 endcapped

Sorbent characteristics: High purity silica with polymeric C18 modification and endcapping
Metal content: Na, Ca, Mg, Al: 1 ppm; Fe: 3 ppm
Particle shape: spherical
Particle size: 2 μm, 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% C
Coverage of the surface: 3 μmol/m²
Efficiency: 5 μm > 90,000 N/m | 3 μm > 130,000 N/m | 2 μm > 180,000 N/m
pH range: pH 1.5 - 10.5
Shipping eluent: Acetonitrile/Water

  • Model: 1.50625.0001
  • Manufactured by: Merck Chemicals

Product 34/101

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