Advanced Depth Filtration for Critical Applications
At Purecowater, we specialize in solving complex solid and liquid filtration challenges. Among our premier offerings are the ErtelAlsop Pak® Lenticular Filters. Designed as a superior alternative to traditional plate and frame filters, these lenticular cartridges (or modules) provide a totally enclosed, sanitary, and easy-to-use depth filtration solution.
Whether you are in the pharmaceutical, food and beverage, or chemical industry, the ErtelAlsop Pak® series offers precise particle retention and high solids loading capacity. This guide outlines the specifications, benefits, and applications of these versatile filter modules.
What is a Lenticular Filter?
Lenticular filtration technology combines the proven efficiency of depth filter media with the convenience of a cartridge format. The term “lenticular” refers to the shape of the filter cells, which resemble a stack of double convex lenses. Each module—commonly available in 12-inch or 16-inch diameters—is constructed from multiple cells of depth filter media stacked vertically.
Unlike open plate and frame systems, lenticular modules operate within a sealed housing. This enclosed design eliminates leakage, reduces oxidation, and ensures a cleaner, safer work environment for operators.
Key Features and Benefits
- Enclosed System: Prevents product loss and protects fluids from external contamination.
- High Solids Loading: The complex matrix of fibers provides excellent holding capacity for particulate matter.
- Scalability: Available in various sizes (12″ and 16″) and cell counts (5 to 18 cells) to match flow rates and batch sizes.
- Rapid Change-Out: The modular “Pak” design allows for much faster change-out times compared to manual plate and frame presses, significantly reducing downtime.
- Versatile Media Options: Compatible with MicroMedia®, AlphaMedia®, and MicroClear® formulations.
Technical Specifications
The ErtelAlsop Pak® cartridges are highly customizable to fit specific process requirements. Below is a breakdown of the standard specifications available through Purecowater.
| Specification | Details |
|---|---|
| Filter Type | Depth Filter (Lenticular Module) |
| Micron Ratings | 0.25 µm to 15 µm (Nominal) |
| Diameters Available | 12-inch (30.5 cm) and 16-inch (40.6 cm) |
| End Cap Configurations | Double O-Ring, Flat Gasket |
| Core Material | Polypropylene (Standard) |
| Gasket Material | EPDM, Nitrile, Viton, Silicone, etc. |
| Maximum Temperature | Typically approx. 176°F (80°C) depending on gasket/media |
Product Series Comparison: Zeta-Pak® vs. Disc-Pak®
Choosing the right media is crucial for optimizing your filtration process. Two of the most common series we distribute are the Zeta-Pak® and the Disc-Pak®.
| Feature | Zeta-Pak® (The Workhorse) | Disc-Pak® (All Cellulose) |
|---|---|---|
| Media Composition | Cellulose + Diatomaceous Earth (DE) or Perlite | 100% Cellulose (AlphaMedia) |
| Key Characteristic | High Zeta Potential for fine particle removal | No inorganic aids (DE/Perlite free) |
| Primary Use Cases | Beverages, haze removal, biotech, general chemical | Dielectric oils, perfumes, syrups, sensitive extracts |
Zeta-Pak® modules are often considered the industry standard. They utilize electrokinetic adsorption (zeta potential) to attract and hold sub-micron particles, making them exceptional for haze removal and polishing [ertelalsop.com](https://ertelalsop.com/lenticular-pak-cartridges/).
Disc-Pak® modules are ideal when the introduction of inorganic filter aids like DE is not permitted. They are frequently used in applications involving dielectric oils or high-viscosity syrups [clearsolutionscorp.com](https://www.clearsolutionscorp.com/product/disc-pak-lenticular-filter).
Common Applications
Due to their versatility and enclosed design, ErtelAlsop Pak Filter Cartridges are used across a wide variety of sectors:
- Life Sciences & Pharmaceuticals: Clarity polishing, cell removal, and sterile filtration pre-treatment.
- Food & Beverage: Filtration of distilled spirits, wine, syrups, and flavorings.
- Botanical Extracts: Effective removal of lipids and waxes in extraction processes.
- Chemicals & Cosmetics: Clarification of perfumes, lotions, and specialty chemicals.
- Industrial Utilities: Dielectric oil maintenance and insulating oil purification.
Contact Purecowater for Your Filtration Needs
Purecowater is your trusted source for ErtelAlsop filtration products. Whether you need to retrofit an existing housing or design a new filtration skid, our team can help you select the precise micron rating and media type for your application.