ErtelAlsop Pak Lenticular Filters: Specifications & Applications

High-Efficiency Depth Filtration for Industrial Applications

For industries requiring superior clarification and solid-liquid separation, ErtelAlsop Pak® Lenticular Filters offer a robust, scalable solution. As a versatile depth filtration module, the Pak® cartridge is designed to handle demanding applications ranging from botanical extraction to chemical processing. Purecowater provides access to these high-performance filtration technologies to help optimize your process workflow.

The ErtelAlsop Pak® system combines the retention capabilities of traditional depth filter sheets with the convenience and leak-proof design of a cartridge housing. This format is ideal for facilities looking to upgrade from plate and frame filters to a more enclosed, sanitary, and easy-to-use system.

What is a Lenticular Filter?

Lenticular filters, such as the Pak® series, consist of multiple stacked filter cells. Each cell is constructed from a pair of depth filter media sheets (such as ertelalsop.com MicroMedia® or AlphaMedia®) sealed around the edges. This assembly resembles a double convex lens, giving the technology its “lenticular” name.

Key design features include:

• Stacked Configuration: Modules typically include between 5 to 18 cells, providing a large surface area in a compact footprint.
• Dimensions: Available primarily in 12-inch (30.5 cm) and 16-inch (40.6 cm) diameters.
• Sealed Edges: Polypropylene edge sealing prevents bypass, ensuring all fluid passes through the media.

Key Applications

The Pak® lenticular cartridges are true workhorses in filtration, adaptable to practically any liquid filtration challenge.

Industry	Application Use Case
Botanical Extraction	Removal of waxes, lipids, and fine particulates. The diatomaceous earth (DE) impregnation in Zeta-Pak® modules is particularly effective here store.clearsolutionscorp.com.
Food & Beverage	Clarification of distilled spirits, syrups, and beverages without affecting taste or odor.
Pharmaceuticals	Filtration of API solvents and catalyst removal (e.g., carbon or platinum recovery).
Chemicals & Utilities	Removal of moisture and particulates from insulating oils and high-purity chemical streams.

Technical Specifications

Understanding the technical capabilities of the Pak® Filter Module ensures you select the right configuration for your housing and process requirements.

Specification	Details
Micron Ratings	Nominal ratings from 0.25 µm to 15 µm. Common extraction ratings include 1.0, 2.5, and 5.0 µm.
Media Types	MicroMedia® (Cellulose/DE/Perlite), AlphaMedia® (Cellulose), MicroClear® (Carbon), and Zeta-Pak®.
End Configurations	Double O-Ring or Flat Gasket.
Gasket Materials	EPDM, Buna-N, Silicone, Viton (Check for solvent compatibility).
Core Material	Polypropylene.

Why Choose Cartridges Over Plate & Frame?

While plate and frame filters are traditional, switching to ErtelAlsop Pak® Lenticular Filters offers distinct operational advantages:

• Closed System: Filtration occurs inside a sealed housing, preventing exposure to the atmosphere and eliminating edge leakage common in press filters.
• Rapid Change-Out: Modules can be replaced in minutes rather than hours, significantly reducing downtime.
• Scalability: Housings can accommodate multiple stacked modules (1-high, 2-high, 3-high, etc.) to increase flow rate without changing the footprint.
• High Solids Loading: Experience high retention efficiency and solids holding capacity due to the depth media matrix.

Zeta-Pak® Technology

One of the most popular configurations is the Zeta-Pak®. These modules utilize media formulated with positive Zeta Potential, which enhances the capture of ultra-fine sub-micron particles (like haze and bacteria) that are negatively charged. This electro-kinetic adsorption complements the mechanical straining of the filter, providing superior clarity.