HALO® ES-CN

HALO® ES-CN Analytical HPLC Columns from AMT

HALO 90 Å ES-CN is moderately polar in nature and highly suited for the separation of acids, bases, and neutrals. It will often exhibit different selectivity compared to straight-chain alkyl phases, such as C8 and C18.

The sterically protected, extensively endcapped diisopropyl-cyanopropylsilane stationary phase of HALO 90 Å ES-CN provides a stable, reversed-phase packing that can be used for basic, acidic, or neutral compounds.

Available in 3 particle sizes:

  • HALO® 2 µm columns can meet or exceed the performance of most non-core sub-2 µm columns at pressures one-third to one-half the back pressure under the same conditions
  • HALO® 2.7 µm columns can meet or exceed the performance of most non-core sub-2 µm columns at pressures one-third to one-half the back pressure under the same conditions
  • HALO® 5 µm columns match the performance of totally porous 3 µm columns at roughly half the back pressure under the same conditions

HALO® ES-CN

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Features
  • Complementary selectivity to alkyl phases
  • More retention for polar analytes and much less retention for non-polar analytes
  • Target analytes are polar and very polar bases, acids and neutrals
  • Example applications are explosives, aromatics and polar compounds
Specifications
Bonded Phase USP Designation Particle Size Pore Size Carbon Load Surface Area Low pH/Temp Limit High pH/Temp Limit Endcapped
ES-CN (diisopropylcyanopropylsilane) L10

2 µm

2.7 µm

5 µm

90 Å

3.4%

3.5%

2.5%

120 m2/g

135 m2/g

90 m2/g

1/80 °C 8/40 °C Yes
Literature