Filtration Media Filter-Ag Plus® Filtration Media
Particulate Reduction Media
Filter-Ag Plus (P/N Filter-Ag Plus) is a clinoptilolite natural media with a large surface area and microporous structure, which can be used as a highly efficient filter media for the reduction of suspended matter.
Due to void spaces as small as 3 microns, Filter-Ag Plus creates a surface area over 100 times greater than silica sand. The angularity of the granules and the tapered internal pore spaces allow for reduction of dirt, silt, and organic matter suspended in water by bridging, straining, and adhesion.

Filter-Ag Plus can be applied to systems designed for either pressure or gravity flow. Because of its unique physical characteristics, Filter-Ag Plus can be used to replace multimedia (graded density) filter designs.
Filter-Ag Plus Pressure Drop Graph
PRESSURE DROP — The graph above shows the expected pressure loss per foot of bed depth as a function of flow rate at various temperatures.
Filter-Ag Plus Backwash Graph
BACKWASH — The graph above shows the expansion characteristics as a function of flow rate at various temperatures.
Air scour is possible and helpful when there is heavy loading in the bed. It has to be done minimally in order to prevent too much bed lift and/or advanced attrition.

An air scour of 1 to 2 cfm/sq.ft. at backwash rates of 15 to 20 gpm/sq.ft. would be sufficient. The pressure required would be static head pressure plus the psi necessary to deliver 1 to 2 cfm/sq.ft. Bed expansion should be observed to ensure that media is not being discharged in the backwash water. A one minute air scour at the beginning of the backwash cycle should be sufficient. Prolonged air scour may cause stratification of the smaller media to the top of the bed which could affect future head loss.
  Particle structure creates less pressure loss, higher sediment loading, longer filter runs, and reduced backwash frequency  
  Deep bed filtration results in superior water quality and reduces the load on downstream equipment  
  High service rates result in lower equipment costs  
  All-natural, environmentally safe product  
  Certified to NSF/ANSI/CAN Standard 61  
Color White to off white
Effective Size 0.55 mm
Uniformity Coefficient 1.8
Hardness (Mohs scale) 4 to 5
Mesh Size 14 x 30
Specific Gravity 2.2 gm per cc
Bulk Density 50 lb per cu.ft.
Packaging 1 cu.ft. bags
(40 bags per pallet)
Water pH Wide range
Water Temperature 140°F (60°C) maximum
(media can be steam cleaned)
Bed Depth 24 to 48 inches
(36 inches for optimal filtration)
Freeboard 50% of bed depth
Service Flow Rate 6 to 15 gpm/sq.ft.
(with intermittant peak flow 20 gpm/sq.ft.)
Backwash Flow Rate 14 to 18 gpm/sq.ft.
Backwash Bed Expansion 30 to 40% of bed depth
Influent water quality and effluent requirements may
affect operating parameters.
A gravel support bed is required.
Allow bed to saturate before initial backwash.
View SWT Filtration Media Guide
This product contains crystalline silica which is known to the State of California to cause cancer and other substances which are known to the State of California to cause cancer, birth defects, and reproductive harm.
This filter media does not remove or kill bacteria. Do not use with water that is microbiologically unsafe or of unknown quality without adequate disinfection before or after the system.
This information has been gathered from standard materials and or test data that is believed to be accurate and reliable. Nothing herein shall be determined to be a warranty or representation expressed or implied with respect to the use of such information or the use of the goods described for any particular purpose alone or in combination with other goods or processes, or that their use does not conflict with existing patent rights. No license is granted to practice any patented invention. It is solely for your consideration, investigation and verification.
Filter-Ag Plus® is a registered trademark of Clack Corporation.
NSF Certified Logo
Certified to NSF/ANSI/CAN Std. 61
Safe Water Technologies, Inc.
996 Bluff City Boulevard
Elgin, IL 60120 USA
Telephone: +1.847.888.6900
Facsimile: +1.847.888.6924

Last Updated: December 30, 2020