Bentonite powder is reckoned for its high water absorption capacity. This powder is basically the active layer of geosynthetic clay liner that serves as a protective layer. This powder tends to increase in volume, formation and in size after absorbing water. Bentonite powder contains ingredients like alumina, silica, lime, ferrous oxide, potash and others in specific amount. This chemical is required for sealing borehole walls. Available in pure form, offered powder is reckoned for its stable chemical attributes, non toxic content and reasonable price.