Specifications:

• Anthracite .8-.9 mm 1 Cu. Ft.
• Although its potential for water treatment has been recognized since ancient times, anthracite coal was not used for that purpose until the beginning of this century.
• Crushed anthracite makes an excellent medium density filtration media.
• Anthracite has been manufactured from the finest Pennsylvania coal since 1932.
• It is specifically selected for water treatment, and during its production goes through several sizing inspections.
• Random samples are chosen for acomplete laboratory quality control analysis for effective size,uniformity coefficient, specific gravity acid solubility and hard-ness.Because of its fractured shape, some sediment penetratesdeeper into the bed.
• When compared to equivalent filtersands, this means longer filter runs and less head loss.
• Backwash rates are also reduced.
• Anthracite, because of its unique density, can be used in multi-media filters.
• At 56 lbs./ft.3 it will hydraulically classify and remain above heavier medial such as Filter Sand or Manganese Greensand providing a prefiltration layer.