What is the difference between Symmetry and SymmetryShield? - WKB54099
Article number: 54099
ENVIRONMENT
- HPLC columns
- Symmetry
- SymmetryShield
ANSWER
Symmetry C8 and C18 columns are fully porous silica packings with monofunctionally bonded C8 or C18 ligands.
SymmetryShield RP8 and RP18 columns are fully porous silica packings with monofunctionally bonded C8 or C18 ligands, where each ligand contains an embedded polar group.
ADDITIONAL INFORMATION
The embedded polar groups are carbamate groups. These polar groups are embedded at the base of each ligand in the SymmetryShield packings. The embedded polar groups attract water molecules, which will shield charged silanol groups, to help lower the amount of tailing with charged basic compounds. Symmetry and SymmetryShield columns exhibit slightly different selectivities.
Waters Shield Technology: White Paper
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