• A Unique Column for the Analysis of Both Amines and Acids
• Based on the Ultra-High Purity State of the Art Silica Particle Technology
• Deactivated Using our Proprietary Extensively Endcapping Technology
• Highly-Efficient Columns Packed with Either 3 or 5 Micron Particles

Shimadzu Premier C8 and C18 are highly base deactivated phases that are 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. These columns can be used over the pH range of 2-8 and are exceptionally inert for the analysis of both amines and acids. It is useful for the separation of molecules that contain polar groups along with hydrophobic groups. The 3 micron Premier C8 and C18 columns are highly efficient and exhibit theoretical plate measurements of between 160,000 to 170,000 plates/meter. Both Premier C8 and C18 are bonded to the same type of ultra high purity silica.

Pore size = 120A
Surface area = 350m²/g
Premier C8 Carbon = 9%
Premier C18 Carbon = 18%
pH range 2-8