Depth Filter Cartridges

Superior Removal Performance and High Contaminant Holding Capacity Across a Wide Variety of Industries

Pall’s melt-blown depth filter cartridges are designed to achieve industry-leading filtration performance and accommodate fluid process needs in a variety of applications. Recognizing that different applications have different fluid cleanliness and filtration requirements, the Pall range of depth filter products are designed to help you choose the best solution at the most economical cost. 

Pall offers three distinct groups of melt-blown filter elements including:

  • Highly Critical Cleanliness: Highly critical fluid applications are protected by the finer range of ratings, offering a graded pore structure media with 99.98% retention efficiency for defined cleanliness control, coupled with long element service life.
  • Critical to general particulate control: For less critical applications, the mid-range ratings offer high retention efficiency (99.9%), with the added benefits of CoLD® (Co-located Large Diameter) fiber technology manufacturing methods, providing maximum strength at a low overall cost.
  • General particulate control: For general particulate reduction and less sensitive component protection, coarse-rated elements with 90% retention efficiencies provide reliable protection at the lowest possible cost.

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Description

Melt-Blown Depth Filters

Known for their enhanced dirt holding capacity, Melt-Blown (or gradient) depth filter cartridges are constructed of melt-blown polypropylene media and feature a fixed fiber matrix with a graded pore structure. Along with continuous intertwined fibers of varying diameters this structure poses a tortuous path for fluid and particulates throughout the depth filter media.  The excellent element strength is due to metal, polypropylene, or extruded fibrous inner cores. With the coarsest pore sizes in the outermost layers and decreasing pore sizes towards the innermost layers of the cartridge, pre-filtration and fine filtration can occur within the same cartridge.

 

The high strength and long service life of a depth filter cartridge can be advantageous over other surface filtration methods due to less frequent change-outs, improved quality, and reduced operational cost. 

 

Spiral-Wound Depth Filters

Pall also offers an innovative spiral-wound depth filter cartridge, which is absolute rated and uses multiple layers of media to create a graded pore structure that provides pre and final filtration in one cartridge. The Poly-Fine® ARD Series of filter cartridge use a proprietary filter media produced directly by Pall for highly consistent, reproducible performance. 

Product Highlights:

  • CoLD (Co-located Large Diameter) melt blown fiber technology
  • Graded (tapered) pore structure
  • Four product families
  • Used in hundreds of market applications
  • Comprehensive options and compatibility
  • Special pharmaceutical industry grades available
  • Food contact compliant grades available
  • Manufactured within a Quality Management System certified to ISO 9001:2008

Specifications

Product Attributes Values
Depth Filters Filter Medium Polypropylene

Core, Cage and Endcaps
  • Polypropylene
  • Glass filled polypropylene
  • Glass filled nylon
Filter Grade Range 100 nm to 200 µm

Adaptors
  • Polypropylene
  • Polypropylene with a stainless steel reinforcing ring
Length 10.2 cm (4 in.) to 127 cm (50 in.)

Applications/Uses

Chemicals & Polymer

Polyurethane Production –

  • Chemicals Intermediate Product (Other)
  • Chemicals Raw Material - Liquid, Amine/Benfield/Other Solvent Loop
  • Chemicals Raw Material/Gas/Air
  • Chemicals Final Product (Liquid) 
  • Poly Commodity Raw Material (Fluids)
  • Poly Commodity Intermediates (Fluids)
  • Poly Engineered & Special Raw Material (Fluids)
  • Poly Engineered & Special Intermediate (Fluids)

Oil & Gas

  • LNG acid gas
  • Midstream process water
  • Refinery amine scrubbing systems
  • Upstream injection water & SRU
  • Midstream acid gas
  • Midstream glycol filtration

Food & Beverage

  • Particle Filtration
  • Pre RO filtration
  • Particulate Control
  • Water Filtration
  • Trap Filtration
  • Gel Removal

Industrial Manufacturing

  • Mining equipment gear case
  • Mining equipment hydraulic fluid 
  • Mining equipment lube oil - on & off-board
  • Mining final product (post smelt / burn off impurities)
  • Mining final product (slurry)
  • Mining wastewater
  • Municipal mining water (rinsing) 
  • Coolants / bearing lubrication
  • Drives gearbox + roll housing
  • Forging / extrusion
  • Gearbox / bearing
  • Gearbox / morgoil
  • Material directional control
  • Material handling
  • Non-contact
  • Quenching / cleaning
  • Roll bite (safety filter) 
  • Shape + material handling 
  • Pulp and paper bleach chemical prep 
  • Pulp and paper LOH
  • Pulp and paper machine process application 
  • Pulp and paper coating
  • Pulp and paper pulp screening
  • Auto painting / coating zinc phosphate bath
  • Medium & light hydraulic
  • Medium & light lubrication
  • Midstream process water

Biotech

Used for the filtration of:

  • Fermentation broths
  • Lysates
  • Blood products
  • Biological fluids
  • Ophthalmics
  • PH adjusters
  • Organic solvents
  • Buffers
  • Parenterals
  • Purified water
  • Hot vegetable and mineral oils
  • Aromatic solvents
  • Small particles
  • Viruses
  • Bacteria

Microelectronics

  • Waste reclaim
  • Wet etch & cleans
  • Ink filtration
  • CMP
  • Ceramic and metal slurry

Photovoltaics

  • Photo chemicals
  • CMP slurry
  • Plating solution
  • Alkalis
  • Acids
  • Solvents
  • Paints
  • DI water
  • Photoresists
  • Organic materials and printing
  • Process gas filtration
  • Slurry filtration
  • Color filter

Power & Utilities

  • Injection water 

CMP applications such as:  

  • Shallow Trench Isolation (STI)
  • Barrier copper
  • Ceria CMP filtration
  • CMP slurry filtration

FAQs

1. What applications are Pall's melt-blown depth filter cartridges most suitable for?

Pall’s melt blown depth filter cartridges are best-suited for fluid applications involving:

  • Component wash fluids
  • Cutting fluids
  • Aqueous solutions
  • Water
  • Coolants
  • Water glycols
  • Mineral and synthetic oils
  • Lubricants
  • Fuels
  • Light oil and solvents
 

2. What is CoLD melt blown fiber technology?

Pall’s CoLD (Co-located Large Diameter) melt blown fiber technology is an interlinked structure composed of micro-thin fibers and large diameter support fibers. This innovative design offers a highly efficient contaminant removal rating, long service life and improved mechanical strength.

 

3. Where can the high critical cleanliness filter elements be used?

The high critical cleanliness melt-blown filter elements can be used in fluid make-up and contamination control, including silt removal, polishing, and clarification.

 

4. What are the critical to general particulate control filter elements best suited for?

  • Contamination control in wash applications
  • Single pass in-line last chance filtration
  • General fluid clarification
 

5. Where can the general particulate control filter elements be used?

General particulate control filter elements can be used as pre-filters in primary applications for higher fluid flows.