Sodasorb is specially processed into porous, coral-like granules in order to expose the greater area of absorbent surface. In cannisters these knobby granules permit free inter-granular circulation of gases. They have no flat surfaces to stack and block, and their harness makes them highly resistant to powdering and breakage. Laboratory tests have proven Sodasorb HP to be fully effective 2-3 times as long as other absorbents. Standard 5 gallon pails; 37 lbs net wt; 41 lbs gross wt.Also available in 55 gallon drum and cannister pack sizes.