Obelisc N

Obelisc N is a column which has very polar characteristics and works well for polar and charged analytes.

  • Obelisc N offers both positively and negatively charged groups to interact with positively or negatively charged analytes.
  • Multiple separation modes (NP, HILIC, IE).
  • In HILIC mode, Obelisc N offers different selectivity form other HILIC or bare silica columns.
  • Mass spec, ELSD, preparative and low UV (<220 nm) compatible, low concentration buffers.

Obelisc N columns are available in all standard dimensions
Column IDs: 22 mm, 10 mm, 4.6 mm, 3.2 mm, 2.1 mm, 1 mm, 0.5 mm, 0.25 mm
Column Lengths: 250 mm, 150 mm, 100 mm, 50 mm, 25 mm, 10 mm
Particles: 10 um, 5 um
Pores: 100 A


Obelisc N Application Examples

Comparison of Obelisc N, SeQuant?® HILIC, and Bare Silica
Effect of both pH and Organic Content on a Separation of Sugars, Amino Acids, and Carboxylic Acids
Effect of Buffer on HPLC Separation of Buffers
HILIC Retention of 1,5-Naphthalenedisulfonic Acid on Obelisc N Mixed-Mode HILIC Columns
HILIC Separation of Aromatic Acids
HILIC Separation of Carboxylic Acids
HILIC Separation of Carboxymethylcysteine and Betaine
HILIC Separation of Common Preservatives – Citric Acid, Ascorbic Acid and EDTA
HILIC Separation of Epinephrine and Epinephrine Sulfonate
HILIC Separation of Polyethylene Glycol
HILIC Separation of Sugars on Obelisc N
HILIC Separation of Surfactant Triton X-100
HILIC Separation of Vitamins Group B
HPLC Analysis of TFA
HPLC Analysis of Trifluoroacetic and Acetic Acid on Obelisc N Mixed-Mode HPLC Column
HPLC Retention of Sulfuric Acid on Obelisc N Column
HPLC Separation of alpha-Aminobutyric, beta-Aminobutyric, and gamma-Aminobutyric acids on Obelisc N
HPLC Separation of Glyphosate Reaction Intermediates and Impurities
HPLC Separation of Nucleic Bases at pH 4 and 5 on Obelisc N
HPLC Separation of Polar and Hydrophobic Drugs on Obelisc R and N
HPLC Separation of Potassium, Perchlorate, Methanesulfonic, Chloride, Bromide, and Nitrate Ions on Obelisc N
HPLC Separation of Vitamin C, Vitamin Group B, and Related Impurities
Method for Analysis of Glyphosate in Apple Juice, Cranberry Juice, Mango Juice and Green Tea
Retention of Azide Ion on Obelisc N Column
Retention of N-Nitrosarcosine on Obelisc N Column
Retention of Taurine on Obelisc N Column
Retention of TFA on Atlantis and Obelisc N
Separation of Serotonin, Dopamine, and Related Compounds
Separation of Trisaccharides on SIELC Columns
Simultaneous Determination of Sodium and Sulfate Ions on Obelisc N Mixed-mode HILIC Column
Simultaneous Separation of Melamine and Cyanuric Acid