RediSep Gold® C18Aq column, 275 gram. Package of 1. 

Specially designed for highly aqueous conditions. Monofunction C18 bonding is interspersed with hydrophilic ligands to prevent phase collapse in high aqueous conditions.  Packed with spherical bonded silica (20-40 µm particle size).  These columns are useful for highly polar, water soluble compounds such as dyes, glycopeptides, and nucleotides.  Reusable when proper storage conditions are maintained.

Specifications:
Reusability:  20 runs (average)
Particle Size:  20-40 µm spherical
Mesh Size:  400-632
Pore Size:  100 Å
Surface Area:  m²/g: 300 ±50
Carbon Content:  11% ±2
Endcapped:  Yes
Loading Capacity:  0.1-2%