Graver Technologies MetSorb HMRG Effective, Low-Cost Adsorbent for Removal of Heavy Metals MetSorb HMRG and HMRP adsorbents utilize a patented material to adsorb both forms of arsenic as well as a wide range of contaminants in water. Empty bed contact times as low as 10 seconds achieve high removal efficiencies. The material affords a higher capacity and a lower level of ion interference than competitive iron and alumina based products. MetSorb HMRG media's adsorptive capacity is 220 grams of arsenic per kilogram of HMRG adsorbent at a pH of 7. It yields 40,000 bed volumes of capacity at an inlet concentration of 40 parts per billion (ppb) of arsenic, at 1 .6 minutes of empty bed contact time EBCT, and a Adsorbent Product Features/Benefits • Removal of heavy metals to meet drinking water • High adsorbent capacity requiring less frequent • Fast kinetics to work effectively at high flow rates • Nonhazardous disposal as solid waste • Cadmium • Uranium • Copper • Zinc • Antimony • Selenium • Commercial and industrial treatment units for drinking water or contaminated water • Municipal water treatment • Carbon blocks • Faucet mounted and countertop devices • Household point of entry treatment units MetSorb HMRG Adsorbent Specifications HMRG Granular White beads Moisture Content iulk Density Free Flowing -I6/+60 U.S. mesh (other sizes available) SMALL COLUMN TEST RESULTS Comparison of HMRG adsorbent with iron-based adsorbent.

BATCH TEST DATA-ADSORPTIVE CAPACITY MetSorb HMRG ARSENIC TREATMENT CAPACITY VS. ARSENIC INLET LEVELS Initial Concentration Final Concentration ARSENIC REMOVAL DATA - NSF 53 Testing was done under the conditions specified by the NSF Standard 53 (or Arsenic. Results at a pH of 6.5 and a pH of 8.5 are shown in the graph above. LEAD ADSORPTION ISOTHERM Lead Concentration in Parts Per Billion Adsorption isotherms for lead between pH 5 and 7 are nearly Treatment capacity as a function of tank size. LEAD REMOVAL COLUMN DATA Effluent Lead Concentration I Influent Lead Concentration I Effluent Lead Concentration...