Comprehensive Guide to ErtelAlsop Pak® Lenticular Filters

For industries requiring high-purity liquid filtration with the efficiency of a closed system, ErtelAlsop Pak® Lenticular Filters represent the gold standard in depth filtration technology. As a distributor for top-tier filtration solutions, Purecowater provides these versatile filter modules to tackle complex solid-liquid separation challenges.

This guide explores the functionality, specifications, and applications of ErtelAlsop’s lenticular technology, combining the performance of plate-and-frame filter presses with the convenience of disposable cartridges.

What Are ErtelAlsop Pak® Lenticular Filters?

The ErtelAlsop Pak® cartridge—also known as a lenticular module—is a depth filtration unit consisting of stacked filter cells. Each cell is formed by two sheets of depth filter media sealed at the edges (typically using a patented polypropylene process). These cells are stacked on a central core, resembling a series of double convex lenses, which gives the product its “lenticular” name [ertelalsop.com].

Unlike surface filters that trap particles only on the outer layer, these depth filters utilize a complex matrix of fibers and particles to trap contaminants throughout the thickness of the media. This results in superior retention capacities and the ability to manage high solids loading.

Key Features and Configurations

ErtelAlsop’s design offers a “totally enclosed” filtration environment, which is a significant upgrade over traditional open plate-and-frame systems. This ensures minimal product loss, zero leakage, and protection from external contamination.

• Scalable Sizes: Available in 12-inch (30.5 cm) and 16-inch (40.6 cm) diameters.
• Cell Counts: Modules can be assembled with anywhere from 5 to 18 stacked cells, allowing for adjustable surface area within a single housing.
• Robust Construction: Features a Polypropylene core and edge seals for chemical compatibility and structural integrity.

Media Formulations

The versatility of the Pak® system comes from the specific media used in the cartridges. ErtelAlsop offers several formulations to suit different process needs [store.clearsolutionscorp.com]:

Media Type	Composition	Ideal Applications
Zeta-Pak® (MicroMedia®)	Cellulose + Diatomaceous Earth (DE)	Botanical extracts, Haze removal, Spirits, general “workhorse” filtration.
Disc-Pak® (AlphaMedia™)	100% Cellulose (No DE/Perlite)	Dielectric oils, perfumes, syrups, applications where active ingredients must be preserved [clearsolutionscorp.com].
MicroClear®	Activated Carbon Impregnated	Color and odor removal, purification.

Technical Specifications

Below are the general specifications for the ErtelAlsop lenticular series. These parameters ensure compatibility with a wide range of industrial housings.

Parameter	Specification
Micron Ratings (Nominal)	0.25 µm to 15 µm
Diameters Available	12″ and 16″
Standard End Configurations	Flat Gasket, Double O-Ring
Core Material	Polypropylene
Gasket Material	EPDM (Standard), others available
Sterilization	In-situ steam or autoclave

Common Applications

Due to their high retention efficiency and enclosed design, Pak® filters are utilized across diverse sectors:

• Pharmaceuticals: For API filtration and pre-filtration of sterile liquids.
• Food & Beverage: Clarification of syrups, distilled spirits, and removal of haze in beverages.
• Botanical Extracts: The Zeta-Pak is particularly effective here, handling high flow rates while removing waxes and lipids via Diatomaceous Earth [store.clearsolutionscorp.com].
• Chemicals & Utilities: Filtration of dielectric oils (using Disc-Pak), coolants, and process water.
• Cosmetics: Purification of perfumes and lotions without altering scent profiles.

Housing Compatibility

ErtelAlsop Pak cartridges are designed to fit into standard lenticular housings. The housings are typically available in:

• Vertical Orientation: Standard footprint for most industrial applications.
• Horizontal Orientation: A unique design that allows for easier loading and unloading (“Lock and Load” system) and reduced product loss [ertelalsop.com].

Whether you are replacing an old plate and frame press or upgrading your current lenticular system, Purecowater can assist in selecting the correct module and housing combination.