SeQuant® HILIC HPLC and UHPLC Columns

Complete range for separations of all polar hydrophilic compounds

SeQuant® HILIC (hydrophilic interaction liquid chromatography) HPLC columns constitute a range of high-performance tools for separating polar hydrophilic compounds. All columns carry densely bonded, truly zwitterionic functional groups with a charge balance of 1:1. Separation is achieved by hydrophilic partitioning combined with weak ionic interactions for maximum selectivity, high loadability and easy optimization of methods.
 

Features and Benefits

  • High-performance HPLC and LC-MS separations of polar hydrophilic compounds
  • Zwitterionic stationary phase ensures reproducible retention
  • Two complementary phase chemistries
  • Maximum LC-MS compatibility with minimized column bleed
  • Excellent reproducibility and robustness
  • Available in a variety of lengths, particle sizes, and pore dimensions
 

Choose your SeQuant® HILIC selectivity

 

SeQuant® Column Functional Group Features Base Particle Particle Size Pore Size Column Types
SeQuant® ZIC-HILIC
Sulfobetaine
High-performance selectivity and robustness silica 3.5 µm, 5 µm 100 Å, 200 Å analytical, capillary, semi-prep, guards
SeQuant® ZIC-cHILIC
Phosphory-lcholine
Complementary selectivity with favorable LC-MS performance silica 3 µm 100 Å analytical, capillary, guards
SeQuant® ZIC-pHILIC
Sulfobetaine
High pH-stability and low noise with ion detectors polymer 5 µm   analytical, guards

 

SeQuant® ZIC®-HILIC

Sulfobetaine (SB)

The ZIC®-HILIC Column is designed to retain and separate all types of polar and hydrophilic compounds and for robust chromatography with high selectivity and reproducibility. The silica-based ZIC®-HILIC sorbent has a bonded stationary phase consisting of a highly polar, permanent zwitterion. Separation selectivity is favored by the 1:1 zwitterion charge balance, which makes the ZIC®-HILIC Column overall neutral, with weak, but important, ionic interactions. Tuning of the selectivity on the ZIC®-HILIC Column during method development is facilitated by the pH-inpendent permanent zwitterion, ensuring that only the analytes (and not the column) is affected during eluent optimization.

 

SeQuant® ZIC®-cHILIC

Phosphorylcholine (PC)

SeQuant® ZIC®-cHILIC is designed for excellent HPLC and LC-MS of polar hydrophilic compounds. This new zwitterionic stationary phase with phosphorylcholine functional group provides you with complementary selectivity for easier method development for substances that have been difficult to separate by previous types of HPLC columns operated in reversed-phase or HILIC mode.

 

       Isocratic separations of the positively charged benzyltrimethylamine (BTMA, peaks indicated with arrows) and the neutral toluene (void marker), uracil and cytosine on ZIC®-cHILIC (left) and ZIC®-HILIC (right) illustrating differences and similarities in selectivity caused by the different charge orientation of the zwitterionic functional groups (see illustrations). Column dimensions were 100 x 4.6 mm, particles size 3 or 3.5 µm, and pore size 100 Å. Eluent was 80 : 20 acetonitrile/ 25 mM aqueous ammonium acetate pH 6.8 pumped at 0.5 mL/min at 23 °C. Detection by UV absorption at 254 nm.

 

SeQuant® ZIC®-pHILIC

The ZIC®-pHILIC stationary phase has the same highly polar, bonded, permanent zwitterion, functional group as the silica based ZIC®-HILIC Column. The user can therefore expect the same selectivity, however, with a trade-off in flow-rate range, and separation efficiency, common with polymeric materials. The more durable support allows for use in an extended pH range, which can be beneficial for certain applications.

 

Example of enhanced selectivity at high pH The application example below illustrates how the selectivity of the ZIC®-pHILIC material can be enhanced by performing the separation at elevated pH. The chromatograms show isocratic separations of gentisic acid, protocatechuic acid and isophthalic acid on a ZIC®-pHILIC Column. The pH-increase also results in higher retention and improved peak shape for these analytes.

 

 

      

Related Products

   

Applications

         
  Ascentis Express HILIC
  U/HPLC Column

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Ordering Information

 

SeQuant Length (mm) ID (mm) ZIC-HILIC 200A, 5 µm ZIC-HILIC 100A, 3.5 µm ZIC-HILIC 200A, 3.5 µm ZIC-cHILIC 100A, 3µm ZIC-pHILIC, 5µm
HPLC Column 50 2.1 1.50450 1.50440 1.50445 1.50656 1.50459
HPLC Column 50 4.6 1.50451   1.50446 1.50659 1.50463
HPLC Column 50 21.2 1.50496        
HPLC Column 100 2.1 1.50452 1.50441 1.50447 1.50657 1.50462
HPLC Column 100 4.6 1.50453     1.50660 1.50464
HPLC Column 150 2.1 1.50454 1.50442 1.50448 1.50658 1.50460
HPLC Column 150 4.6 1.50455 1.50444 1.50449 1.50661 1.50461
HPLC Column 150 10 1.50493        
HPLC Column 150 21.2 1.50497        
HPLC Column 250 2.1 1.50457 1.50443      
HPLC Column 250 4.6 1.50458     1.50662  
HPLC Column 250 10 1.50494        
               
Guard column 20 2.1 1.50435 1.50439   1.50664 1.50437
Guard Kit 20 2.1         1.50438
               
Capillary column 30 0.3     1.50489    
Capillary column 30 1     1.50478    
Capillary column 150 0.075 1.50465        
Capillary column 150 0.3 1.50481   1.50479 1.50669  
Capillary column 150 1 1.50482 1.50487 1.50480 1.50670  
               
Guard capillary 5 0.3 1.50492     1.50665  
Guard capillary 5 1 1.50490     1.50666  
               
Guard Fitting 14 1 1.50434        
Guard Kit 20 1 1.50436