BIRM

Color: black
Density: 45 – 50 pounds per cubic foot
Effective size: .48 millimeters
UC (D 60): 1.72

Birm is an efficient media to remove dissolved iron and manganese compounds from raw water supplies. It acts as an insoluble catalyst to enhance the reaction between dissolved oxygen and the iron compounds. 

Other advantages of birm include long material life with relatively low attrition loss, a wide temperature performance range and extremely high removal efficiency. Under proper water conditions, no chemicals are required for maintenance. Regeneration is not required.

AWWA Standard B100-01 and NSF Standard 61 approved.