New Product: "Viva" 5µm Columns from Restek - NEW!

Turning Visions Into Reality
Restek Corporation is one of the world’s leading manufacturers of high-quality chromatography products. As innovators of GC, HPLC, Air Monitoring and Gas Sampling products, Restek focuses on "Plus 1" service and quality products. Viva columns are based on a wide pore material Restek designed for optimal large molecule separations. In developing Viva silica, we found that although many commercial wide-pore silicas meet the standard 300Å mean pore size, most have very broad distributions about this mean, with a significant portion of their pore volume falling below 150Å. This means a large portion of the surface area is unavailable to larger molecules. Viva columns have a narrow distribution about the mean pore size, permitting a larger portion of the silica surface to play a role in the separation. • Excellent for separating peptides or proteins.
• Rugged, spherical particles, with 300Å pore size.
• High proportion of pore/surface area available to large molecules. Highly base-deactivated wide pore packing that exhibits excellent peak shape for a wide range of compounds. Less retention in reversed phase assays than Viva C18 or Viva C8.

• particle size: 5µm, spherical
• pore size: 300Å
• carbon load: 3.5%
• endcap: yes
• pH range: 2.5 to 7.5
• temperature limit: 80°C

Introducing the Viva C4 5µm Columns (USP L26) from Restek Corporation...