Pre-co-Floc® filter aid is an environmentally friendly filter aid made from cellulose fibers. Pre-co-Floc cellulose fibers can be used independently where silica cannot be tolerated in the system, or together with Celatom® DE or Celatom perlite filter aids. In filtration applications, cellulose can greatly improve filtration performance when used as a primary or remedial precoat with diatomaceous earth by:

• Bridging gaps in the filter septum and small mechanical leaks in the gaskets and leaf seats.
• Improving the stability of the filter-aid cake to make it more resistant to pressure fluctuations and interruptions.
• Preventing fine particulate bleed-through.
• Precoating easily and rapidly.
• Reducing soluble contamination.