Filtration technology has evolved significantly since the early days of plate and frame presses. For industries requiring high-efficiency depth filtration with minimal product loss and ease of operation, ErtelAlsop Pak® Lenticular Filters represent the gold standard. As a distributor and OEM for top-tier filtration solutions, Purecowater provides these advanced lenticular cartridges to tackle complex solid-liquid separation challenges.
This article explores the technical capabilities, specifications, and operational advantages of the ErtelAlsop Pak® series, a solution designed to replace open filtration systems with a sanitary, leak-free, and user-friendly enclosed designs.
What is the ErtelAlsop Pak® Lenticular Filter?
The ErtelAlsop Pak® is a depth filter cartridge (often called a module) consisting of stacked lenticular filter cells. Originally invented by Alsop Engineering in the 1940s, this design combines the superior filtration mechanics of depth media with the convenience of a cartridge format.
Unlike surface filters that simply catch particles on the top layer, these lenticular modules utilize a complex matrix of fibers and filter aids (such as Diatomaceous Earth) to trap particles throughout the depth of the media. This results in higher solids loading capacity and effective retention of ultra-fine particles, including haze and lipids.
Key Design Features
- Structure: Comprised of 5 to 18 stacked filter cells (lenses).
- Sealing: Edges are sealed via a patented injection-molding process using polypropylene, ensuring integral stability.
- Zeta Potential: Media options like Zeta-Pak® exhibit a positive electrokinetic charge (Zeta Potential) to attract negatively charged contaminants smaller than the mechanical pore size.
- Enclosed System: Designed to fit inside sealed housings, eliminating leakage and exposure associated with traditional plate and frame filters.
Technical Specifications
The flexibility of the Pak® series allows it to be tailored to specific process flows and retention requirements. Below are the standard specifications available through Purecowater.
| Specification | Details |
|---|---|
| Diameter Options | 12 inch (30.5 cm) & 16 inch (40.6 cm) |
| Micron Ratings (Nominal) | 0.25 µm – 15 µm |
| Standard Configurations | Flat Gasket, Double O-Ring (Code 8 style) |
| Core Material | Polypropylene |
| Gasket Material | EPDM (Standard), others available |
| Available Media Types | MicroMedia® (Cellulose/DE), AlphaMedia® (Pure Cellulose), MicroClear® (Activated Carbon) |
Source: store.clearsolutionscorp.com
Primary Applications
Because of their ability to handle high solids loading and remove sub-micron particles without stripping flavor or essential characteristics, ErtelAlsop Pak cartridges are widely used in:
- Botanical Extracts: Removal of waxes, lipids, and plant particulates while maintaining high flow rates.
- Distilled Spirits: Haze removal and polishing for a crystal-clear product.
- Pharmaceuticals: Clarification of broths and API filtration (Pharmaceutical Grade options available).
- Food & Beverage: Filtration of syrups, flavorings, and oils.
- Cosmetics: Purification of perfumes and lotions.
Lenticular vs. Plate & Frame Filters
Many facilities operate legacy plate and frame filters. While effective, they are labor-intensive and prone to leakage. The ErtelAlsop Pak® offers a direct upgrade path.
| Feature | Plate & Frame | Lenticular Pak® |
|---|---|---|
| System Design | Open (Drip pan required) | Fully Enclosed Housing |
| Changeout Time | Hours (Manual cleaning) | Minutes (Swap cartridges) |
| Product Loss | Significant (Leakage) | Minimal |
| Scalability | Add/Remove Plates | Add/Remove Modules |
For existing plate and frame users, processes can often be translated directly to the lenticular format using the same filter media grades.
Why Choose Purecowater?
As a distributor for premium brands like Veolia, LG Membranes, and Fil-trek, Purecowater understands the nuances of industrial filtration. We can assist you in selecting the correct micron rating, media type (such as Zeta-Pak® for charged particle removal or MicroClear® for carbon treatment), and housing configuration.
Whether you need a single 12-inch module for a pilot run or a multi-round housing for full-scale production, our engineering team can guide you to the right solution.
Ready to Optimize Your Filtration Process?
Stop dealing with leaky filter presses and inefficient media. Contact Purecowater today to discuss your application and get a quote on ErtelAlsop Pak® Lenticular Filters.
References:
[1] ertelalsop.com/lenticular-pak-cartridges/
[2] store.ertelalsop.com/products/zetapak-lenticular-filter-cartridge