For industries requiring high-performance solid-liquid separation, ErtelAlsop Pak® Lenticular Filters represent a premium solution in depth filtration technology. As a distributor for leading filtration brands, Purecowater provides these advanced modules to tackle complex purification challenges across pharmaceutical, food and beverage, and chemical sectors.
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What are ErtelAlsop Pak® Lenticular Filters?
ErtelAlsop Pak® cartridges, also known as lenticular filter modules, are depth filtration units designed to replace traditional plate and frame filters. The design consists of stacked filter “cells”—circular depth filter sheets joined in pairs with sealed edges. These cells are assembled around a central core, resembling a stack of double convex lenses [ertelalsop.com].
This configuration offers a totally enclosed, hygienic system that eliminates the drip and leakage often associated with plate and frame presses. The modules seal inside a housing (using either flat gaskets or double O-rings), ensuring all fluid passes through the media for maximum clarity.
Key Features and Benefits
1. High Solids Loading and Retention
The core advantage of the Pak® system is its use of premium depth filter media. Depending on the series, these cartridges can retain particles ranging from 0.25 to 15 microns. The complex matrix of fibers and filter aids (like Diatomaceous Earth or Perlite) within the media provides high solids loading capacity, making them ideal for polishing liquids and protecting downstream membrane filters [ertelalsop.com].
2. Leak-Free, Enclosed Design
Unlike open plate and frame systems, lenticular modules operate inside a sealed housing (available in vertical or horizontal configurations). This design minimizes fluid loss, protects operators from exposure to process fluids, and prevents external contamination [ertelalsop.com].
3. Versatile Media Options
ErtelAlsop offers a variety of media formulations to suit specific compatibility needs. This includes pharmaceutical-grade materials, options for water removal, and 100% cellulose options for sensitive applications like essential oils or spirits.
Product Configurations
Zeta-Pak® Series
The Zeta-Pak® is often considered the workhorse of the product line. These modules are manufactured with Micro-Media® containing Diatomaceous Earth (DE). The DE forms a rigid, porous cake that effectively sieves out particulate matter while providing a positive zeta potential for the adsorption of ultra-fine particles such as haze or colloids [store.clearsolutionscorp.com].
Disc-Pak® Series
The Disc-Pak® utilizes AlphaMedia™, which is 100% cellulose and free from DE or Perlite. This series is ideal for applications where maintaining active ingredients is critical, such as in botanical extracts, perfumes, and dielectric oils [clearsolutionscorp.com].
Technical Specifications
| Feature | Specification Details |
|---|---|
| Diameters Available | 12-inch (30.5 cm) and 16-inch (40.6 cm) |
| Number of Cells | Standard stacks typically range from 5 to 18 cells |
| Micron Ratings (Nominal) | 0.25 µm to 15 µm |
| End Cap Configurations | Flat Gasket or Double O-Ring (222/226 style) |
| Core Material | Polypropylene (Standard), Stainless Steel (Optional) |
| Gasket Materials | EPDM, Viton, Silicone, Buna-N |
| Max Temperature | Dependent on housing and gasket selection |
Common Applications
Due to their scalability and high throughput, ErtelAlsop Pak® filters are utilized globally in diverse industries:
- Botanical Extraction: Removal of waxes and lipids using DE-impregnated media without stripping desirable cannabinoids or terpenes [store.clearsolutionscorp.com].
- Distilled Spirits: Haze removal and polishing for shelf stability.
- Pharmaceuticals: Clarification of fermenter broths and pre-filtration for sterile lines.
- Food & Beverage: Filtration of syrups, juices, and edible oils.
- Cosmetics: Clarification of perfumes and lotions.
Housing Compatibility
ErtelAlsop Pak® cartridges are compatible with a wide range of housings, including the unique Horizontal “Lock and Load” Housing. This horizontal orientation allows for ergonomic loading at waist height, enhancing operator safety and reducing change-out times compared to vertical housings [ertelalsop.com].
Whether you require a single-round housing for pilot testing or a multi-round skid for full-scale production, Purecowater can engineer the correct solution for your process.
Ready to optimize your filtration process?
ErtelAlsop Pak filters offer the reliability of depth filtration with the convenience of a cartridge format. To determine the correct media grade and micron rating for your specific fluid capabilities, contact our engineering team today.