PFM (Pumice Filtration Media)® is used in both cartridge and open multi-media filters. In cartridge filters, PFM (Pumice Filtration Media)® can replace sand, zeolites, and carbon based filter media. The narrow particle size range and rough surface texture of PFM (Pumice Filtration Media)® provide an open void volume, which increases flow rates while maintaining excellent adsorption and impurity trapping capabilities.
In multi-media filters, PFM (Pumice Filtration Media)®, effectively replaces anthracite coal on top of the sand layer. PFM (Pumice Filtration Media)®, like anthracite, has a low density, which facilitates trapping the impurity particles in the open void volume of the larger pumice particles thus preventing the blinding of the top of the sand filter media. This leads to longer run times and reduced back-washing.
In addition to its standard products, CR Minerals can provide custom grades as requested. All PFM (Pumice Filtration Media)® products are NSF-61 approved and meet AWWA B100 physical and chemical specifications.
Link 1: The performance of pumice as a filter bed material under rapid filtration conditions
Link 2: Clack Filter – Ag
Link 3: Calculation of the cost benefits by using reduced wash water volumes with pumice/sand media
To place an order or obtain additional information, please contact CR Minerals at
505-428-2940, or contact your local distributor.
CR Minerals is a worldwide supplier of pumice products to many diverse markets. It operates a state of the art processing facility in Ohkay Owingeh, New Mexico.
Although the information and suggestions in this publication are believed to be correct, CR Minerals makes no representations or warranties as to the accuracy or completeness of this information.
