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200 Lake Drive <br />Glasgow, DE 19702 <br />MetSorb®HMRG (Heavy Metal Removal Granules) – 16/60 US Mesh <br />Recommended Operational Design Parameters <br />OPERATING PARAMETER MetSorb® HMRG 16/60 <br />Service Flow Rate <br />(Hydraulic Loading) 3-12 gpm/ft2 <br />Flow Direction Typically Downward <br />(Up-flow under certain conditions) <br />Empty Bed Contact Time <br />(EBCT) <br />1.5-3.0 Minutes <br />(Water Quality Dependent) <br />Maximum System Pressure 100 psi <br />Backwash Flow Rate 3-7 gpm/ft2 <br />Backwash Bed Expansion 40% <br />Backwash Volume 5-7 Bed Volumes <br />Vessel Freeboard 50% of Bed Depth <br />Typical Minimum Bed Depth 22 Inches <br />Maximum Continuous ORP 400 mV <br />Sanitization Chlorine <br />Concentration 25-50 ppm (for max 24 hr. hold) <br />Incoming Chlorine <br />Concentration 0.5 ppm <br />MetSorb® HMRG is a highly effective granular adsorbent that reduces Arsenic III & V and a <br />wide variety of heavy metals including Lead, Uranium, Antimony, Zinc, Radium, Cadmium, <br />Copper, Chromium and Vanadium from drinking water and process solutions. For more <br />information on MetSorb® adsorptive media, please contact Bennett Buchsieb at 302-383-9310 <br />or by email at bbuchsieb@gravertech.com