You’re looking into Birm from Clack Corporation (USA)—a granular, proprietary filter media designed to remove dissolved iron and manganese from water, without requiring chemical regeneration.
What is Clack Birm?
- Catalytic filter media made by Clack Corporation, USA—registered trademark since 2006
- Function: Accelerates oxidation of ferrous iron (Fe²⁺) and manganese into filterable solids, using dissolved oxygen—no chemical regeneration needed .
- Packaging: Typically sold in 1 cu ft (≈ 35–40 lb; ~18–19 kg) bags under part number A8006

BIRM
Brands: Clack
Origin: USA
Packing: 28.82/Bag (1cft)
CleanTech Engineering Limited
| PHYSICAL PROPERTIES | |
|---|---|
| Color | Black |
| Bulk Density | 35-40 lbs./cu. ft. |
| Mesh Size | 10 x 40 |
| Specific Gravity | 2.0 gm/cc |
| Effective Size | 0.48 mm |
| Uniformity Coefficient | 2.7 |
| ADVANTAGES | |
|---|---|
| Under 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. | |
In summary : Clack Birm® (A8006) is a reliable, efficient, and cost-effective filter media for removing iron and manganese under the right water conditions—without chemicals. Let me know if you’d like distributor contacts in Bangladesh, pricing info, or help selecting a filtration system!

Industrial Water Plant


