<table class="table table-striped"> <tbody><tr> <td>Color</td> <td>Black </td> </tr> <tr> <td>Bulk Density</td> <td>35-40 lbs./cu. ft. </td> </tr> <tr> <td>Mesh Size</td> <td>10 x 40 </td> </tr> <tr> <td>Specific Gravity</td> <td>2.0 gm/cc </td> </tr> <tr> <td>Effective Size</td> <td>0.48 mm </td> </tr> <tr> <td>Uniformity Coefficient</td> <td>2.7</td> </tr> </tbody></table>

<table class="table table-striped"> <tbody><tr> <td>Under the proper conditions, no chemicals to purchase for maintenance. </td> </tr> <tr> <td>Regeneration not required. </td> </tr> <tr> <td>Iron removal efficiency is extremely high. </td> </tr> <tr> <td>Negligible labor cost: only periodic backwashing required. </td> </tr> <tr> <td>Durable material with a long life and wide temperature range. </td> </tr> </tbody></table>

<table class="table table-striped"> <tbody><tr> <td>Color</td> <td>Brown to black </td> </tr> <tr> <td>Bulk Density</td> <td>20 kg / 0.0135 m3 </td> </tr> <tr> <td>Specific gravity</td> <td>2.65 </td> </tr> <tr> <td>Effective size</td> <td>0.60 - 0.65mm </td> </tr> <tr> <td>Uniform coefficient</td> <td>1.4 to 1.7 </td> </tr> <tr> <td>Mesh size</td> <td>20 - 42 </td> </tr> <tr> <td>Attrition loss per annum</td> <td>1 - 5%</td> </tr> </tbody></table>

<table class="table table-striped"> <tbody><tr> <td>Water pH range: 5.8 - 8.6 </td> </tr> <tr> <td>Maximum water temperature: 45 degrees c </td> </tr> <tr> <td>Bed deptd: 600 mm (minimum) commonly 1000mm </td> </tr> <tr> <td>Freeboard: 40% of bed deptd (minimum) </td> </tr> <tr> <td>Service flow rate: 1 - 30 m3/m2 hr (commonly 5 – 12 25 - 80 m3/m2 hr) (dependant on water quality and treatment conditions) </td> </tr> <tr> <td>Backwash flow rate: suggest 700mm/min vertical velocity </td> </tr> <tr> <td>Backwash bed expansion: between 15 - 50% </td> </tr> </tbody></table>