Advanced Depth Filtration with ErtelAlsop Pak® Lenticular Filters
For industries requiring high-purity filtration with the capacity to handle heavy solids, ErtelAlsop Pak® Lenticular Filters offer a superior solution. As a trusted distributor for major filtration brands, Purecowater provides these advanced depth filter modules to help facilities transition from open press systems to cleaner, totally enclosed filtration processes.
The ErtelAlsop Pak® design combines the benefits of traditional depth filtration sheets with the convenience of a cartridge format. This article details the specifications, media options, and operational advantages of integrating these lenticular filters into your workflow.
What Are Lenticular Pak® Cartridges?
Lenticular cartridges, also known as modules, are essentially a stack of depth filter cells. Each “cell” consists of two sheets of filter media (such as MicroMedia® or AlphaMedia®) sealed together at the edges using a patented process. These cells are stacked on a central core to form a module that resembles a series of double convex lenses—hence the term “lenticular.”
Unlike surface filters that trap particles only on the outer layer, these depth filters trap contaminants throughout the thickness of the media matrix. This structure provides high solids loading capacity and excellent retention efficiency.
Key Advantages Over Plate & Frame Filters
Many facilities traditionally used plate and frame filter presses for depth filtration. While effective, these systems can be labored-intensive and prone to leakage. The ErtelAlsop Pak® system modernizes this process:
- Totally Enclosed System: Prevents product loss and protects the fluid from external contamination.
- Rapid Change-Out: Modules can be replaced in minutes rather than hours, significantly reducing downtime.
- Scalability: Available in 12-inch and 16-inch diameters with varying cell counts (5 to 18 cells) to match flow rate requirements.
- Zero Leakage: Gasketed end-caps (Flat Gasket or Double O-Ring) ensure a secure seal within the housing.
Media Technologies and Variations
ErtelAlsop offers a variety of media compositions to suit specific chemical compatibility and filtration goals. Choosing the right media is critical for optimal performance.
| Series | Description | Primary Applications |
|---|---|---|
| Zeta-Pak® | The “workhorse” of the line. Contains cellulose, filter aids (DE/Perlite), and resin for positive zeta potential. | Pharmaceuticals, Bio-Tech, Food & Beverage. |
| Disc-Pak® | 100% cellulose composition. Ideal for applications where DE or Perlite are not permitted. | Dielectric oils, perfumes, extensive chemical compatibility. |
| Bio-Pak® | Pharmaceutical-grade media designed for critical bio-reduction and high purity. | Biologicals, vaccines, blood fractionation. |
| MicroClear® | Impregnated with activated carbon for adsorption applications without handling loose carbon dust. | Color removal, odor removal, dechlorination. |
For more details on the Disc-Pak capabilities, see this guide from Clear Solutions.
Technical Specifications
Understanding the physical and performance specifications helps in selecting the correct module for your housing. The table below outlines standard configurations available for ErtelAlsop Pak cartridges.
| General Specifications | |
|---|---|
| Diameters | 12 inch (30.5 cm) | 16 inch (40.6 cm) |
| Micron Ratings | 0.25 µm to 15 µm (Nominal) |
| End Cap Configurations | Double O-Ring (DOR) | Flat Gasket |
| Core Material | Polypropylene (Standard), Stainless Steel options available |
| Gasket Materials | EPDM, Silicone, Viton, Buna-N |
| Sterilization | Autoclavable, Steam-in-Place (SIP), Hot Water Sanitization |
These specifications ensure that the cartridges can be retrofitted into most standard lenticular housings. For deep specification sheets, refer to ErtelAlsop.
Common Applications
Due to their versatility and enclosed design, Pak® Lenticular Filters are utilized across a broad spectrum of industries:
- Food & Beverage: Polishing filtration for distilled spirits, wine, beer, and sugar syrups.
- Cosmetics: Clarification of perfumes, lotions, and essential oils.
- Chemicals: Removal of precipitates and catalysts from aggressive solvents.
- Power Generation: Filtration of dielectric oils and transformer fluids (specifically using the Disc-Pak series).
- Pharmaceuticals: Pre-filtration for protection of final membrane filters.
Integration with Housing Systems
ErtelAlsop Pak® cartridges are designed to work seamlessly with both vertical and horizontal filter housings. The “Lock and Load” mechanism in horizontal housings allows operators to slide cartridges onto the central post comfortably, enhancing safety and reducing labor costs.
Contact Purecowater for Filtration Solutions
At Purecowater, we specialize in solving complex solid and liquid filtration challenges. Whether you need to replace existing lenticular modules or design a new filtration skid with ErtelAlsop technology, our engineering team is ready to assist.
Ready to optimize your filtration process?
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