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SiliCycle SiliaBond C18 (17% C) Monomeric nec, 40 to 63 um, 60 A, Qty: 50 g, Silica Gel, Particle Size: 40 to 63 um, Technique: Column Chromatography, Bulk Functionalized Irregular Silica Gel, Carbon Load: 15.5%, Content And Storage: Keep dry., Packaging: