COSMOSIL® 5C22-AR-II utilizing longer alkyl chains (C22) than C18 (ODS) is especially effective for the separation of fat-soluble compounds. As COSMOSIL® 5C22-AR-II is polymeric bonded type, therefore it has strong acid resistance just like the 5C18-AR-II. These columns retain high performance even if acidic mobile phase is used to separate proteins and peptides. COSMOSIL® 5C22-AR-II employs ultrapure silica gel low in metal impurities, thus chelating compounds can be separated sharply.
Material characteristics
COSMOSIL® 5C22-AR-II Silica gel high purity porous spherical silica Average particle size 5µm Average pore size approx. 120Å Specific surface area approx. 300m2/g Stationary phase polymeric dococyl group End capping treatment near-perfect treatment Carbon content approx.19%
Stereo selectivity
Compared to either monomeric type (5C18-MS-II) or other polymeric type(5C18-AR-II) octadecyl(ODS) columns,COSMOSIL® 5C22-AR-II displayes improved stereo selectivity. Click Click
Ordering information
Product name Size Code No. End-fitting COSMOSIL® 5C22-AR-II Packed Column 4.6 mm I.D.× 150 mm 04598-51 Waters type COSMOSIL® 5C22-AR-II Packed Column 4.6 mm I.D.× 250 mm 04599-41 Other sizes may be available. Please enquire!
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