ErtelAlsop Pak® Lenticular Filters: Precision Depth Filtration Modules

Advanced Depth Filtration for Industrial & Sanitary Applications

For industries requiring high-purity liquid clarification without the operational complexity of traditional plate and frame presses, the ErtelAlsop Pak® Lenticular Filter offers a premier solution. As a distributor for top-tier filtration systems, Purecowater provides these advanced lenticular modules to versatile markets ranging from pharmaceuticals to food and beverage processing.

The ErtelAlsop Pak® cartridge—originally developed in the 1940s—transforms standard depth filtration media into a totally enclosed, easy-to-handle modular format. This design eliminates leakage associated with plate and frame filters while providing scalability and superior particle retention ertelalsop.com.

How Lenticular Technology Works

Lenticular filtration bridges the gap between sheet filtration and cartridge filtration. The “Pak” consists of stacked filter cells—resembling double convex lenses—assembled into a unified cartridge. Each cell is constructed from two sheets of depth filter media (such as MicroMedia® or AlphaMedia®) sealed at the edges using a patented polypropylene process.

This construction allows for:

• High Solids Loading: The depth media matrix traps particles throughout its thickness, not just on the surface.
• Enclosed Processing: Unlike open filter presses, lenticular housings are sealed, ensuring sanitary conditions and preventing product loss or external contamination.
• Rapid Changeout: Modules can be swapped in minutes, significantly reducing downtime compared to manual sheet loading ertelalsop.com.

The Power of Zeta Potential

One of the critical advantages of the ErtelAlsop Pak® is its Zeta Potential. Through the use of wet strength resins, the filter media is modified with a positive electrokinetic charge. This charge attracts negatively charged contaminants—such as haze-forming colloids, bacteria, and endotoxins—that are smaller than the filter’s physical micron rating.

This capability makes these filters particularly effective for applications like botanical extraction and distilled spirits, where “haze” removal is essential for product quality gwkent.com.

Technical Specifications

Purecowater supplies Pak® cartridges in various configurations to fit standard housing requirements. Below are the typical specifications for industrial and sanitary use:

Feature	Specification Details
Available Diameters	12 inch (30.5 cm) & 16 inch (40.6 cm)
Micron Ratings (Nominal)	0.25 µm to 15 µm
Cell Count	5 to 18 cells per stack
Gasket Configurations	Flat Gasket, Double O-Ring
Core Material	Polypropylene
Filter Media Options	Cellulose, Diatomaceous Earth (DE), Perlite, Carbon, High Purity

Primary Applications

Due to the versatility of media grades—such as the MicroMedia® series containing Diatomaceous Earth (DE) for rigid cake formation—ErtelAlsop filters are utilized across diverse sectors:

• Botanical Extracts: Efficient removal of waxes and lipids in cannabis and hemp oil production using solvent-compatible components clearsolutionscorp.com.
• Food & Beverage: Clarification of mixing syrups, soft drinks, wines, beers, and distilled spirits (Cognac, Whiskey, Brandy).
• Pharmaceuticals: Pre-filtration providing protection for downstream sterile membranes and high-value equipment.
• Cosmetics: Filtration of perfumes, colognes, lotions, and essential oils.
• Chemicals & Utilities: Transformer oil conditioning and general chemical clarification.

Why Choose Purecowater?

As an OEM and distributor for leading filtration brands, Purecowater understands that selecting the right depth module depends on your specific viscosity, flow rate, and retention requirements. Whether you strictly need flat gasket ends or double O-ring configurations for critical sealing, we can help engineer the correct solution for your process line.