High Performance, Absolute-Rated
Depth Filter for Ink Jet Ink Filtration
The Pall® Nexis A filter cartridge is a high performance depth filter and an essential part of many ink jet ink formulation applications. This all-polypropylene filter features proprietary CoLD (Co-located Large Diameter) fiber technology to enhance the filters’ strength and resist contaminant unloading. In addition, this filter has been optimized with a graded pore structure for outstanding dirt holding capacity and long service life.
Pall Nexis A filters are an ideal choice for a wide variety of ink jet ink formulation applications, including solvent, aqueous and UV curable ink jet formulations.
Reference Pall literature publication 1254-B “Filtration Solutions for Ink Jet Ink Formulation” for specific recommendations.
Features and Benefits
- Pall NEXIS A Series filters are high efficiency depth filters with all-polypropylene construction.Four nominal filter lengths are available: 254 mm/10 in., 508 mm/20 in., 762 mm/30 in., and 1016 mm/40 in.
- Pall NEXIS A filters for ink jet ink formulation filtration are available in key removal ratings from 0.5 to 10 µm absolute (coarser grades are available for other applications).
|All-polypropylene construction||Excellent compatibility with most ink systems||One filter can be utilized across a wide range of ink families|
|Continuous gradient pore structure||Prefiltration section and final filtration capability in one filter||Longer service life and lower cost per gallon for filtration|
|Proprietary CoLD fiber technology||Enhanced filter structural strength||Resist contaminant unloading even at high differential pressures|
|Free of adhesives, binders, resins and silicone||Very low extractables in most ink jet systems||Filter will not impact critical ink properties|
|Absolute rated at >99.9% efficiency||High efficiency contaminant removal, even at finer levels||Excellent protection of downstream final filter|
|Wide array of sizes and configurations available||Can be used in a variety of filter housings and applications||Easily retrofitted into current systems and flexible for future expansion|
|Microprocessor-controlled, continuous manufacturing process||Maximum filter consistency from lot-to-lot||Ink will meet quality criteria on a consistent basis|
Graded Pore Structure Micrographs of Nexis Series Filter Cartridges (magnification x 75)
|Outer Pre-Filtration Zones||Intermediate Pre-Filtration Zones|
|Intermediate Pre-Filtration |
Zones with CoLD fibers
|Final Filtration Zone: Micro-Thin |
Fibers interwoven with CoLD fibers
Products in this datasheet may be covered by one or more patents, including EP 830,191; US 5,591,335; US 5,653,833; US 5,681,469; US 5,690,782; US 5,730,820; US 5,733,581; US 5,741,395; US 5,783,011.
Typical Liquid Flow Rate
versus Differential Pressure
3 Flow rate is per 10 in. / 254 mm. For liquids with viscosities differing from water, multiply the pressure drop by the viscosity in centipoise (cP).
Materials of Construction
|Core, Cage and Endcaps||Polypropylene|
|Gaskets/O-Rings||Ethylene Propylene (EPDM)1|
Operating Conditions2Maximum operating differential pressures and temperatures in compatible fluids:
|Operating Temperature||Maximum Differential Pressure|
|86 °F/30 °C||60 psid/4.1 bard|
|150 °F/66 °C||25 psid/1.7 bard|
|180 °F/82 °C||15 psid/1.0 bard|
2 Fluids that do not soften,swell or adversely affect the filter or materials of construction
|Code||Absolute Removal Rating4|
4 Based on >99.9% Retention Rating by ASTM F-795 Test
|No Code||Double Open |
End (DOE) Industrial
|H21||DOE, 'Santoprene' |
Gasket Seal Endcaps
|M3||SOE, flat closed end, |
external 222 o-rings
|M7||SOE, fin end, |
external 226 o-rings
|M8||SOE, fin end, |
external 222 o-rings