AquaCera W9511151 CeraPlus GAC is a ceramic water filter. It is manufactured with a coconut shell based carbon to the core of the filter. It allows the filter to treat chlorine, tastes, and odors.   
Specifications:

• Micron Rating: 0.5 µm
  
• Cleanable filter element
  
• Chlorine Reduction: >95%
  
• Organics Reduction:>95%
  
• Filter Capacity: 400 gallons
  
• >90% efficiency at 0.5 µm
  
• >99.9% efficiency at 0.2 µm 
  
• Silver-impregnated to prevent bacteria growth