This document discusses silica gel powder, which is commonly used as a stationary phase in column chromatography. Silica gel powder is available in different particle sizes and is used according to the application. It offers high flow rates and a high capacity to absorb or isolate desired compounds from mixtures. The document also notes that silica gel powder is used in thin layer chromatography due to its large surface area. Overall, the document promotes silica gel powder from Sorbead India as an effective adsorbent for chromatographic separation.