Available from Unifilt Corp.
Unifilt Corporation specializes in the manufacture of Anthracite Filter Coal, Filter Sand, High Density Materials (Ilmenite and Garnet) and Filter Gravel. All products meet or exceed AWWA B100-16 and are listed under NSF Standard 61.
Anthracite Filter Coal or “Anthrafilt”
High Density Material (Ilmenite and Garnet)
Support Gravel or Filter Gravel