Advanced Depth Filtration Solutions
For industrial applications requiring high solids loading capacity and precision retention, ErtelAlsop Pak® Lenticular Filters stand as a premier solution. As a key offering at Purecowater, these depth filter modules combine the trusted technology of plate and frame filtration with the convenience and hygiene of an enclosed cartridge system. Whether for pharmaceuticals, food and beverage, or chemical processing, the Pak® series offers scalability and reliability.
What is a Lenticular Filter?
Lenticular filtration technology, originally invented by Alsop Engineering in the 1940s, utilizes a stacked disc design. Each “Pak” or module consists of multiple filtration cells stacked vertically. This design mimics the surface area and depth filtration characteristics of traditional filter sheets but completely encloses them within a housing. This results in a system that prevents leakage, reduces exposure to the atmosphere, and significantly simplifies change-outs compared to manual plate and frame presses.
Key Series: Zeta-Pak® vs. Disc-Pak®
ErtelAlsop offers distinct formulations to tackle specific filtration challenges. Selecting the right media is crucial for optimizing your process.
Zeta-Pak®: The Workhorse
The Zeta-Pak® is the industry standard for general-purpose depth filtration. Utilizing Micro-Media®, these cartridges are composed of cellulose fiber, filter aid (typically Diatomaceous Earth), and a wet-strength resin. The inclusion of Diatomaceous Earth creates a rigid, porous matrix that efficiently sieves out particulate matter while maintaining high flow rates.
- Best For: Haze removal, difficult-to-filter liquids, and applications requiring positive zeta potential for ultra-fine particle retention.
- Industries: Botanical extracts, spirits, biopharmaceuticals.
Disc-Pak®: Pure Cellulose
The Disc-Pak® utilizes AlphaMedia®, which is 100% cellulose. It contains no inorganic aids like resins, binders, or fiberglass. This makes it the ideal choice for applications where the purity of the media is paramount or where Diatomaceous Earth is restricted.
- Best For: Light to medium viscosity liquids, dielectric oils, gelatin, perfumes, and syrups.
- Industries: Cosmetics, Food & Beverage, Utilities.
Technical Specifications
Purecowater supplies ErtelAlsop Pak® cartridges in a variety of configurations to fit existing housings and specific process requirements.
| Feature | Specification |
|---|---|
| Diameters Available | 12 inch (30.5 cm) & 16 inch (40.6 cm) |
| Number of Cells | 5 to 18 stacked cells per module |
| Micron Retention | 0.25 µm to 15 µm (Nominal) |
| Core Material | Polypropylene |
| End Cap Configurations | Double O-Ring, Flat Gasket |
| Gasket Materials | EPDM, Silicone, Buna-N, Viton, etc. |
| Filtration Area | High surface area due to lenticular design |
Benefits of Upgrading to Pak® Cartridges
Replacing traditional filtration methods with ErtelAlsop Pak® modules provides immediate operational advantages:
- Leak-Free Operation: The totally enclosed design eliminates edge leakage often associated with plate and frame filters.
- Reduced Downtime: Modules are pre-assembled and easy to load/unload. A “Lock and Load” horizontal housing system can further speed up this process compared to the labor-intensive cleaning of filter presses.
- High Solids Loading: The complex matrix of fibers provides excellent holding capacity for solids, extending the life of the filter stream.
- Scalability: Over 300 precision dies ensure that you can scale from laboratory pilots to full production without changing media types.
Applications
These filters are versatile and widely used across rigorous industries mentioned in clearsolutionscorp.com and ertelalsop.com:
- Life Sciences: API filtration, broth clarification.
- Distilled Spirits: Haze removal in whiskey, vodka, and gin; chill filtration.
- Chemicals: Solvent recovery, catalyst removal.
- Cosmetics: Clarification of perfumes, lotions, and oils.
- Utilities: Filtration of dielectric oils and coolants.
Contact Purecowater for Filtration Solutions
Whether you need to replace existing lenticular modules or engineer a new depth filtration skid, Purecowater provides the expertise and OEM access to get the job done. We supply the full range of ErtelAlsop Pak® Filters, housings, and media.
Ready to optimize your filtration process?
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