Comprehensive Guide: ErtelAlsop Pak Lenticular Filters

Introduction to ErtelAlsop Pak® Lenticular Filters

In the world of industrial filtration, the need for high-efficiency, ease of use, and sterile capability is paramount. The ErtelAlsop Pak® Lenticular Filter series represents the evolution of depth filtration technology. Designed to bridge the gap between traditional plate and frame filters and modern cartridge convenience, these modules offer a scalable solution for applications ranging from botanical extraction and pharmaceuticals to food and beverage processing.

As a trusted distributor and OEM, Purecowater provides access to the full line of ErtelAlsop lenticular cartridges, ensuring your process achieves optimal clarity and particulate retention.

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What is a Lenticular Filter?

Lenticular filters, often referred to as “depth modules” or “stack filters,” utilize a pre-assembled stacking design. Unlike surface filters that trap particles only on the top layer, lenticular filters use depth media—a thick matrix of cellulose, filter aids (like Diatomaceous Earth or Perlite), and varying surface charges—to trap particles throughout the entire thickness of the media.

The “Pak” aspect refers to the modular construction. The filter media sheets are sealed into cells and stacked on a central core. This design effectively mimics the surface area of a plate and frame filter but is contained within a closed housing, preventing leakage and protecting operators from exposure to the process fluid.

Key Advantages over Standard Cartridges

• Higher Solids Loading: The depth matrix can hold significantly more contaminants than a pleated surface filter before clogging.
• Zeta Potential: Many ErtelAlsop Paks (like the Zeta-Pak®) possess a positive electrokinetic charge that attracts negatively charged sub-micron particles (such as bacteria and endotoxins) that are smaller than the physical pore size.
• Scalability: Available in 12-inch and 16-inch diameters with varying cell counts (up to 16+ cells), allowing users to scale from lab pilot testing to full production easily.

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Technical Specifications & Configurations

The ErtelAlsop Pak® filters are highly customizable to suit specific chemical compatibilities and filtration goals. Below is a breakdown of the standard configurations available through Purecowater.

Feature	Specification Standards
Diameters Available	12 inch (30.5 cm) & 16 inch (40.6 cm)
Micron Ratings	0.25 µm to 15 µm (Nominal)
Mounting/End Cap	Flat Gasket (DOE) or Double O-Ring (Plug-in)
Core Material	Polypropylene (Standard)
Gasket Material	EPDM, Silicone, Viton, Buna-N
Maximum Temperature	Approx. 180°F (82°C) *Dependent on housing/gasket

Media Formulations

ErtelAlsop offers distinct media grades to target specific contaminants:

• MicroMedia® (Zeta-Pak): The workhorse of the industry. Contains cellulose and filter aids (DE/Perlite) with a strong positive Zeta potential. excellent for haze removal and sub-micron retention.
• AlphaMedia®: A high-purity, all-cellulose media. Ideal for applications where low extractables are critical or where DI water is used.
• MicroClear®: Incorporates activated carbon into the matrix for color and odor removal without the mess of loose carbon powder.

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Primary Applications

Thanks to their robust construction and versatile media options, Pak filters are deployed across dozens of industries.

Industry	Use Case
Botanical Extracts	Winterization, wax removal, and lipid separation. The stored depth media handles the heavy load of fats and waxes effectively.
Distilled Spirits	Chill haze removal and polishing filtration for whiskey, vodka, and gin to ensure shelf stability and clarity.
Pharmaceuticals	API (Active Pharmaceutical Ingredient) purification and catalyst removal.
Cosmetics	Filtration of perfumes, heavy oils, and liquid soaps to remove particulate matter and haze.
Chemical Utilities	Transformer oil filtration (AquaKv-Pak) to remove moisture and carbon deposits.

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Why Partner with Purecowater?

Purecowater is not just a vendor; we are solutions engineers. As an authorized distributor for major filtration brands including Veolia, WTS, and Fil-trek, we understand how to integrate ErtelAlsop Pak modules into your existing skid or housing setup.

Whether you require a single replacement module or a complete housing assembly for a new production line, our team helps calculate the necessary surface area and micron rating to maximize your throughput and minimize downtime.