Tag Archives: absolute rated filter cartridge

STRATUM A – ABSOLUTE RATED

Stratum™ A Series Absolute Rated Melt Blown Filter Cartridges   

•Absolute retention ratings from 0.5 to 70 microns

•Multi-zone melt blown depth filter with a graded pore structure for maximum dirt holding capacity •Thermally bonded fibers for high void volume and long on-stream life •Lot traceable filters come with certificate of conformance •100% polypropylene FDA listed materials of construction •All components meet USP Class VI criteria and are safe for use in pharmaceutical applications •Molded center core for higher temperature and pressure capability NSF logoCertified to NSF/ANSI 61 for materials requirements only – Component * Typical Applications »Water »Pharmaceuticals »Food and beverages »Microelectronics »Cosmetics »Polymers »Coatings * NSF 61 applies to NN, P6 and PX styles only

•Multi-zone melt blown depth filter with a graded pore structure for maximum dirt holding capacity •Thermally bonded fibers for high void volume and long on-stream life •Lot traceable filters come with certificate of conformance •100% polypropylene FDA listed materials of construction •All components meet USP Class VI criteria and are safe for use in pharmaceutical applications •Molded center core for higher temperature and pressure capability NSF logoCertified to NSF/ANSI 61 for materials requirements only – Component * Typical Applications »Water »Pharmaceuticals »Food and beverages »Microelectronics »Cosmetics »Polymers »Coatings * NSF 61 applies to NN, P6 and PX styles only

•Multi-zone melt blown depth filter with a graded pore structure for maximum dirt holding capacity •Thermally bonded fibers for high void volume and long on-stream life •Lot traceable filters come with certificate of conformance •100% polypropylene FDA listed materials of construction •All components meet USP Class VI criteria and are safe for use in pharmaceutical applications •Molded center core for higher temperature and pressure capability NSF logoCertified to NSF/ANSI 61 for materials requirements only – Component * Typical Applications »Water »Pharmaceuticals »Food and beverages »Microelectronics »Cosmetics »Polymers »Coatings * NSF 61 applies to NN, P6 and PX styles only

PMA Polypropylene Filter Series

‘Absolute’ Rated Pleated Filter Cartridges

This all polypropylene absolute rated filter cartridge retains particles with absolute efficiency. Available in a broad range of pore sizes, it is suitable for a wide range of applications.

The pleated construction provides a high surface area to offer outstanding overall filtration economy.

Filter Features–Benefits

  • Micron ratings from 0.2 to 25 μm– Broad application range
  • Meets current USP Class VI biological test for plastics – Acceptable for food & beverage contact
  • “Absolute” Efficiency– Rated at 99.98% (Beta 5000)
  • Graded pore density– Multi-layer, graded density media – asymmetric pores for high dirt holding capacity
  • Sufficient surface area– High flow rate, and long on-line service– Minimize maintenance cost
  • Fixed matrix construction– Eliminates dirt unloading at maximum differential pressure
  • Polypropylene Construction– Inert to many process fluids
  • Various Gasket/O-Ring materials– Compatible with a variety of fluids
  • Manufactured in continuous lengths up to 40 inches

Filter Specifications

Media: Polypropylene
Inner core: Polypropylene
End caps: Polypropylene
Cage: Polypropylene
Gaskets/O-Rings options: Buna-N, EPDM, Silicone, Viton, Teflon Encapsulated Viton (O-Rings only)
Micron ratings: 0.2, 0.45, 1.0, 2.5, 5.0, 10, 25 μm
*Other micron rated media available upon request
Dimensions and Operating Parameters
Nominal lengths: 24.7, 25.4, 50.8, 76.2, 101.6 cm
Outside diameter: 6.86cm
Inside diameter: 2.54 cm
Maximum operating temperature: 80°C
Differential pressure: 75 psid @ 70°F (5.2 bar @ 21°C)
40 psid @ 176°F (2.8 bar @ 80°C)
Recommended changeout
pressure for disposal: 35 psid (2.4 bar)

Filter Removal Efficiency

Beta Ratio Efficiency Beta 5000 99.98% Beta 100 99% Beta 50 98%
Polypropylene      
0.2 micron 0.20 0.10 0.05
0.45 micron 0.45 0.30 0.20
1.0 micron 1.0 0.60 0.30
2.5 microns 2.5 2.0 1.5
5.0 microns 5.0 4.0 3.0
10.0 microns 10.0 8.0 7.0
25.0 microns 25.0 19.0 15.0
Beta Ratio =
Upstream particle counts
Downstream particle counts

The micron ratings shown at various efficiency and beta ratio value levels were determined hrough laboratory testing, and can be used as a guide for selecting cartridges and estimating their performance.

Under actual field conditions, results may vary somewhat from the values shown due to the variability of filtration parameters. Testing was conducted using the single-pass test method, water at 3 gpm/10” cartridge.

Contaminants included latex beads, coarse and fine test dust. Removal efficiencies were determined using dual laser source particle counters.

FDA compliance
All polypropylene material used in manufacturing complies with the regulations of the FDA title 21 of the Code of Federal Regulations Sections 174.5, 177.1520, and 177.1630, as applicable for food and beverage contact.

Graver PMA Absolute Pleated FilterDownload