Primesep

Columns with negatively charged functional groups due to the embedded anionic ion-pairing reagent.
 

Primesep A - Strongest acidic phase
Primesep 100 - Strong acidic phase
Primesep 200 - Medium acidic phase
 

Choose the correct column by their functional group acidity to match the pKa value of your basic compounds.

Columns with positively charged functional groups.
 

Primesep B - Strong basic column for use with TFA, phosphoric or perchloric acid solutions in a mobile phase.
Primesep B2 - Weak basic column for ammonium acetate buffered solution.

Alkyl phases with built-in functional groups that are able to form weak complexes with amino groups or metal ions.
 

Primesep C - Combined reverse-phase and complex formation properties for interaction with amines, sulfonium, phosphonium and metal ions.

Three interactions within one column:

• Reversed Phase
• π-π
• Strong-Cation Exchange
   

Primesep P - Choose for separation of structural isomers of aromatic compounds.