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Purospher® STAR NH2 250-4 LiChroCART® HPLC Cartridge, 120 Å, 5 μm, 4 x 250 mm - 150245

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Purospher® STAR NH2 (Amino-phase) LiChroCART®

Inner Diameter (I.D.): 4 mm
Length: 250 mm
Package Contents: 1 Cartridge


Purospher® STAR NH2 (Amino-phase) is primarily designed for carbohydrate analysis with a typical mobile 
phase consisting of acetonitrile and water. Additionally, Purospher® STAR NH2 can also be used in the normal-phase 
retention mode.

With LiChroCART® cartridges the user works with re-usable endfittings which fit different cartridge lengths. 
Since these cartridge holders may remain in the system and the capillary connections do not need to be detached, 
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 NH2 benefits
  • Very high separation efficiency as measured by the plate count
  • Absence of metal impurities, thus giving consistently symmetrical peaks
  • Extended column lifetime

Specifications of Purospher® STAR NH2

Sorbent characteristics: 
with NH2 (Amino) modification
Particle shape: spherical
Metal content: Na, Ca, Mg, Al: 1 ppm; Fe: 3 ppm
Particle size: 5 μm
Pore size: 12 nm (120 Å)
Pore volume: 1.1 mL/g
Specific surface area: 330 m2/g
Coverage of the surface: 3 μmol/m2
Efficiency: > 50,000 N/m
pH range: pH 2 - 7.5
Shipping eluent: n-Heptane

  • Model: 1.50245.0001
  • Manufactured by: Merck Chemicals

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