응용 : General reversed phase, basic and acidic compound             Pharmaceutical and enviromental analsysis 장점 : High reprocucibility Particle size  : 3μ, 5μ , 10μ , 10μ -PREP, 15μ (Ultra pure silica : No metal)             Pore Size : 100Å                         pH stability : 1.5 - 10      Surface area : 400㎡/g                  Carbon loading : 17.5% Available Dimension : Capillary-LC(0.3mm ID) ~ Preparative(<50mm ID), Bulk media