Advanced Depth Filtration for Industrial & Sanitary Applications
For industries requiring rigorous liquid filtration standards—from pharmaceutical production to botanical extraction and food and beverage processing—ErtelAlsop Pak® Lenticular Filters represent a premier solution. As a distributer/OEM for top filtration brands, Purecowater is proud to offer these versatile depth filter modules designed to maximize retention efficiency while minimizing product loss.
This guide provides a comprehensive look at the ErtelAlsop Pak® technology, its specifications, and why it is the preferred upgrade from traditional plate and frame filtration systems.
What is a Lenticular Pak® Filter?
The ErtelAlsop Pak® cartridge (also known as a lenticular module) is a depth filtration unit constructed from stacked filter cells. Each “cell” consists of two precision-cut sheets of depth filter media (such as MicroMedia® or AlphaMedia®) sealed around the edges. When stacked, these cells resemble a double convex lens, giving the technology its “lenticular” name.
Unlike surface filters that only trap particles on the exterior, these depth filters utilize a complex matrix of cellulose fibers, optional filter aids (like Diatomaceous Earth or Perlite), and resins to trap particles throughout the thickness of the media. This results in significantly higher solids holding capacity and superior clarity.
Key Advantages Over Plate & Frame Filters
While plate and frame filters have been the industry standard for decades, the Lenticular Pak® format resolves many of their operational headaches:
- Totally Enclosed System: Prevents exposure to the environment, reducing contamination risks and preventing leakage.
- Rapid Change-Out: Swapping out a cartridge takes a fraction of the time compared to manually dressing a filter press with individual sheets.
- Scalability: Available in 12-inch and 16-inch diameters with varying cell counts (5 to 18 cells) to match flow rate requirements.
- Zero Edge Leakage: The patented sealing process ensures all fluid passes through the media, guaranteeing filtrate quality.
Technical Specifications
Understanding the capabilities of the ErtelAlsop Pak® is essential for selecting the right module for your process stream. Below are the general specifications for the product line.
| Feature | Specification Data |
|---|---|
| Available Diameters | 12 inch (30.5 cm) & 16 inch (40.6 cm) |
| Micron Ratings (Nominal) | 0.25 µm to 15 µm |
| End Cap Configurations | Flat Gasket or Double O-Ring (222, 226 styles) |
| Core Material | Polypropylene (Standard) |
| Gasket Materials | EPDM, Silicone, Viton, Buna-N |
| Number of Cells | Stackable options from 5 to 16+ cells per low |
Product Families & Media Types
ErtelAlsop offers distinct media formulations to tackle specific liquid challenges.
1. Zeta-Pak® (The Workhorse)
The Zeta-Pak® utilizes MicroMedia®, which incorporates cellulose isolation, filter aids (Diatomaceous Earth or Perlite), and a wet strength resin. This combination creates a positive Zeta Potential, allowing the filter to electrokinetically attract negatively charged particles (like bacteria and haze) that are smaller than the pore size.
- Best For: Haze removal, microbial reduction, botanical extracts (wax/lipid removal), and general chemical filtration.
2. Disc-Pak® (Pure Cellulose)
The Disc-Pak® uses AlphaMedia®, which is 100% cellulose and contains no inorganic filter aids (no DE or Perlite). This is critical for applications where DE might alter the flavor profile or strip active ingredients.
- Best For: Distilled spirits, perfumes, dielectric oils, and sensitive pharmaceutical applications.
Industry Applications
These lenticular filters are versatile workhorses across multiple sectors:
| Industry | Typical Application |
|---|---|
| Botanical Extraction | Removal of waxes, lipids, and fine particulates from ethanol or CO2 extracts. |
| Pharmaceuticals | API purification, removal of carbon fines, and pre-filtration for membrane protection. |
| Food & Beverage | Polishing syrups, haze removal in beer/wine, and sterile filtration pre-treatment. |
| Cosmetics | Clarification of perfumes, lotions, and oils without affecting the scent profile. |
Upgrade Your Filtration Process Today
Whether you are dealing with high solid loads or require ultra-fine particle retention, ErtelAlsop Pak® Lenticular Filters provide a scalable, efficient, and sanitary solution. Purecowater can assist in specifying the correct micron rating, media type, and housing configuration for your facility.
Ready to optimize your filtration system?
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