5 pound bag of natural granular zeolite. Free shipping in USA We also have this product available in fine powder and gravel form. Look at our other zeolite listings. Toxic nuclear radiation is being spread all around our world due to many reactors malfunctioning or spilling their deadly load into the environment. Radiation can cause long-term damage. Food can become contaminated with radioactive isotopes, as well the water that irrigates crops and supplies drinking water. Natural Zeolites are so powerful they are even used in toxic dump and nuclear waste cleanup. At the Hanford Nuclear Facility in Richland, Washington, radioactive strontium-90 and cesium-137 have been removed from radioactive waste solutions by passing them through tanks packed with the natural zeolite. After the accident at the Three Mile Island nuclear power plant, zeolites were used to adsorb radioactive ions. More than 500,000 tons of zeolite was dumped via helicopter at Chernobyl to absorb radioactive chemicals and other harmful toxins that were released during the disaster. In addition, cattle were fed zeolite to help keep radioactive ions out of milk, and zeolite was baked into cookies/biscuits to help minimize the contamination in humans. Sandbags of Zeolite were dropped into the seawater near the Fukushima nuclear plant to adsorb radioactive Cesium that was present there in high levels. Specifications for Zeolite Clinoptilolite Mineral Component: Typical 85% Balance opaline silica General Formula: (Na, K, Ca)2-3Al3(Al, Si)2Si13O36-12H2O Cation Exchange Capacity: 180 to 195 meq/100 grams (as ammonium, -N) Maximum Water Retention: >55% of weight Overall Surface Area: 24.9 meters2/gram Bulk Density: Approximately 55-60 lbs/foot3 (Varies according to MESH size) Hardness: 3.5 to 4.0 Mohs Crushing Strength: 2500 lbs/in3 (4200-6000 lbs/in3 in concrete tests) LA Abrasion Test: (Wear Index) 24% PH: 7 (Neutral) Colour: Pale Green Chemical Composition: Cations: Potassium: 3.47% Calcium: 1.60% Sodium: <0.5% Other Elements: Cu 25 ppm Zr 480 ppm Nd 45 ppm Zn 35 ppm Y 55 ppm La 55 ppm Rb 120 ppm Nb 40 ppm Ba 1200 ppm Fe 1.3% Sr 560 ppm Ce 130 ppm Pb <30 ppm Whole Rock Analytical Data: SiO2 67.4% Al2O3 10.6% Fe2O3 1.7% MgO 0.45% CaO 2.23% Na2O 0.59% K2O 4.19% TiO2 0.27% P2O5 0.10% MnO <0.01% LOI@925C 11.4 We have this item in bulk and repackage it in smaller sizes.