The GIST C8 column has less retention than a C18 and is ideal for rapid analysis of hydrophobic compounds. The high purity silica allows elution of acidic or basic compounds with low ionic adsorbtion. Highly uniform particles ensure stable mobile phase delivery and symmetrical peak shapes. USP L7, pore size: 100A, surface area: 350 m2/g, 8% carbon load, pH range: 1 to 10, fully endcapped. A guard column is recommended to prolong the lifetime of the analytical column.