Product Name: Iron Removal Water Filter Media (Birm) (A8006) Model NO.: A8006 BIRM Trademark: CLACK Transport Package: Original Packing Specification: 10 X 50 mesh Origin: Made in USA HS Code: 84219910 Product Description ADVANTAGESUnder the proper conditions, no chemicals to purchase for maintenance. Regeneration not required.Iron removal efficiency is extremely high.Negligible labor cost: only periodic backwashing required.Durable material with a long life and wide temperature range.Weighs only 40-45 lbs. /cu. Ft.PHYSICAL PROPERTIESColor: BlackBulk Density: 40-45 lbs. Cu. FtMesh Size: 10 X 50Specific Gravity: 2.0gm/CCEffective Size: 0.48 mmUniformity Coefficient: 2.7ConDITIONS FOR OPERATIonAlkalinity should be greater than two times the combined sulfate and chloride concentration.Maximum water temp: 100° F/38° CWater pH range: 6.8-9.0Dissolved Oxygen (D. O. ) content must be equal to at least 15% of the iron (or iron and manganese) content.Bed depth: 30-36 in.Freeboard: 50% of bed depth (min. )Backwash rate: 10-12 gpm/sq. Ft.Backwash Bed Expansion: 20-40% of bed depth (min. )Service flow rate: 3.5-5 gpm/sq. Ft. Intermittent flow rates and/or favorable local conditions may allow higher flow ratesINFLUENT AND BACKWASH LIMITATIonSFree chlorine concentration less than 0.5 ppmHydrogen Sulfide should be removed prior to contact with Birm@ mediaOil: None PresentPolyphosphates: None present