ErtelAlsop Pak® Lenticular Filters

Advanced Depth Filtration with ErtelAlsop Pak® Lenticular Cartridges

For industries requiring critical liquid filtration, maintaining high flow rates while ensuring superior particle retention is a constant challenge. At Purecowater, we specialize in solving complex solid and liquid filtration problems by partnering with top-tier manufacturers. We are proud to offer ErtelAlsop Pak® Lenticular Filters, a premium solution designed for pharmaceutical, food and beverage, chemical, and utility applications.

This product guide details the functionality, specifications, and benefits of ErtelAlsop’s lenticular technology and how it can optimize your process lines.

What is a Lenticular Filter?

The Pak® Lenticular Cartridge (also known as a module) is a depth filtration system that combines the filtration efficiency of traditional plate and frame filter sheets with the convenience of a disposable cartridge. The design consists of stacked filter cells—typically ranging from 5 to 18 cells per unit. Each cell is constructed from two discs of depth filter media (such as MicroMedia® or AlphaMedia®) sealed together at the edges.

The term “lenticular” refers to the double convex lens shape of the assembled cells. This geometry, combined with a totally enclosed housing, creates a robust system that handles high solids loading without the leakage issues often associated with open plate and frame presses.

Key Features and Benefits

• Totally Enclosed System: Unlike plate and frame filters, lenticular housings are sealed, preventing liquid loss and protecting the product from external contamination. This is critical for high-value pharmaceuticals and volatile spirits.
• High Solids Loading Capacity: The complex matrix of fibers in the depth media provides a vast surface area for trapping particles, allowing for longer run times before change-out.
• Scalability: ErtelAlsop media grades are consistent across formats. You can scale up from a lab-size disc to a full-production 16-inch lenticular module without changing the filtration characteristics.
• Rapid Change-Out: The “Lock and Load” design allows operators to replace cartridges in a fraction of the time required to dress a filter press, significantly reducing downtime and labor costs.

Technical Specifications

ErtelAlsop Pak® filters are versatile and can be configured to meet specific process requirements. Below are the standard specifications for the lenticular modules available through Purecowater.

Feature	Specification
Diameter Options	12 inch (30.5 cm) & 16 inch (40.6 cm)
Micron Retention	0.25 µm to 15 µm (Nominal)
Filter Media Types	Cellulose, MicroMedia® (with DE/Perlite), AlphaMedia®, MicroClear® (Carbon)
Core Material	Polypropylene
End Cap Configurations	Flat Gasket or Double O-Ring
Gasket Materials	EPDM, Buna-N, Viton, Silicone, Teflon Encapsulated
Number of Cells	Standard stacks of 5 to 18 cells (custom options available)

Media Formulations

The performance of the Pak® cartridge is defined by the media inside. ErtelAlsop offers several proprietary formulations:

• Zeta-Pak® (MicroMedia®): Incorporates filter aids like Diatomaceous Earth (DE) or Perlite with cellulose. These provide a positive Zeta Potential, enhancing the removal of ultrafine particles and haze, making them ideal for pharmaceuticals and botanical extracts.
• AlphaMedia®: A pure cellulose media used for general filtration where no filter aids are required.
• Bio-Pak®: Pharmaceutical-grade media designed to optimize flow rates and retention for sensitive biological applications.
• MicroClear®: Activated carbon-impregnated media, used for color correction, odor removal, and decolorization without the mess of loose carbon powder.

Applications

Thanks to their robust design and variety of media, ErtelAlsop lenticular filters are used across a wide spectrum of industries:

Life Sciences	Clarification of vaccines, blood plasma fractionation, and removal of proteins.
Distilled Spirits & Wine	Chill haze removal, polishing filtration, and particulate removal before bottling.
Botanical Extracts	Efficient dewaxing and lipid removal (winterization) for cannabis and hemp oil processing.
Food & Beverage	Syrup clarification, edible oil polishing, and soft drink filtration.
Chemical & Utility	Insulating oil reconditioning, resin removal, and chemical purification.

Why Choose Purecowater for Your Filtration Needs?

As a distributor for Veolia, WTS, and Engineered Solutions like ErtelAlsop, Purecowater provides more than just products; we provide engineered solutions. Whether you are upgrading from an open press to a closed lenticular system or need to identify the correct micron rating for a new product line, our team is ready to assist.

Ensure your process sterility, reduce product loss, and improve operator safety with ErtelAlsop Pak® Lenticular Filters.