Chromegabond WR (Wide Range)                     

• For the analysis of both basic and acidic compounds
• Deactivated using our proprietary endcapping technology
• C8 and C18 stationary phases
• Highly efficient columns packed with either 3 or 5 micron particles

Chromegabond WR is a highly base deactivated phase that is produced via a two step process. The first step involves bonding monomerically either C8 or C18 alkyl chains to an ultra high purity synthetically produced spherical silica. The second step utilizes a proprietary multiple endcapping bonding process that produces highly base deactivated columns. This state-of-the-art bonding procedure uses mixtures of C2 and C4 alkyl silanes to react with residual silanol groups. Unlike the traditional TMS endcapping, the C2 and C4 groups are much more resistant to degradation by acidic and basic mobile phase compositions. The WR product can be used over the pH range of 2-8. The Chromegabond WR product, as a result of our special bonding treatment, is highly hydrophobic and exceptionally inert for the analysis of both acids and bases. It is useful for the separation of molecules that contain polar groups along with hydrophobic groups. The 3 micron Chromegabond WR columns are highly efficient and exhibit theoretical plate measurements of between 160,000 to 170,000 plates/meter. Both Chromegabond WR C8 and C18 are bonded to the same type of ultra high purity silica.