Ion Exchangers

SERVA Ion Exchange Media and Adsorber Resins

Ion exchangers are usually solid, macromolecular polyelectrolytes in the form of macroscopic particles with a porous structure. They are insoluble in water but capable of swelling. They are able to exchange bound ions against others dissolved in the surrounding medium. The cation exchangers (polyacids) carry fixed negatively charged functional groups (anchor groups grafted onto the polymer) with positive counter-ions, while the anion exchangers (polybases) have positively charged groups fixed onto the polymer with negative counter-ions to equalize the charge. Binding and release of the counter-ions are reversible processes and dependent on their concentration and affinity to the anchor groups.

There are inorganic ion exchangers which are natural aluminium silicates, e.g. Zeolites, which are used for water softening and desalting or Bentonite, which can be used for detoxification and as an adsorbent for proteins and viruses. Furthermore there are synthetic organic ion exchange resins, which are mainly produced by polymerization. They are of fundamental importance for many industrial applications and described below in more detail.

Ion exchangers on the basis of modified agarose, cellulose or dextran are used for the separation of large biomolecules, e.g. proteins or nucleic acids (see SERVACEL® Cellulose Ion Exchangers).

Adsorber resins have a similar basic matrix as ion exchange resins, but without functional groups. Binding of substances runs via non-ionic forces (see SERDOLIT®  PAD Resins).

Promotions

Market Square
September - December 2018

Product of the Month November:
Mammalian Membrane Protein Extraction Kit

Top
Close window
Market Square
September - December 2018

Electrophoresis:

  • Nucleic Acid Electrophoresis
  • SDS-PAGE
  •  Horizontal Isoelectric Focusing (IEF)
  •  Western Blotting: Reagents & Equipment

Life Sciences:

  • Enzymes & Reagents for Mass Spectrometry
  • Detergents
  • Antibiotics
  • Protein Quantification
  • Protease- & Phosphatase-Inhibitors

→ This way to the new Market Square

Close window
Product of the Month November:
Mammalian Membrane Protein Extraction Kit

Fast, Easy and Gentle Protein Isolation

→ This way to the Special Offer

SERVA InfoMail - Get the latest information

Close window

When subscribing to »SERVA InfoMail« you will receive information about the latest product release, special promotions, new jobs at SERVA and more. This service is, of course, free of charge.
You may remove your name any time from the list of recipients.

Quick Order

Close window

Using the Quick Order field, you can add a product to your shopping cart with just one click. All you have to do: enter the Cat.No. as shown in our catalog in the format xxxxx.yy and click the Go!-Button.