Introduction to ErtelAlsop Pak® Lenticular Filters
In the world of industrial liquid filtration, precision and efficiency are paramount. For facilities looking to upgrade from traditional plate and frame filter presses or seeking a scalable depth filtration solution, ErtelAlsop Pak® Lenticular Filters represent the gold standard. As a trusted distributor and OEM, Purecowater is proud to offer these advanced filtration modules, designed to tackle the most rigorous solid-liquid separation challenges across pharmaceutical, food & beverage, and chemical industries.
The ErtelAlsop Pak® system combines the superior retention capabilities of depth filter media with the convenience of a totally enclosed, leak-free design. This article provides a comprehensive overview of the Pak® product line, including technical specifications, media options, and application suitability.
What is a Lenticular Filter?
Lenticular filters, also known as depth filter modules, consist of depth filter sheets stacked in a vertical orientation. The term “lenticular” refers to the lens-like shape of the individual cells. Each module is comprised of multiple cells (typically ranging from 5 to 18) stacked on a central core. The edges of these cells are sealed using a patented process (often polypropylene) to prevent bypass.
This design offers a significant surface area in a compact footprint and allows for a closed filtration system. This separates it from the open-air operation of traditional plate and frame presses, reducing product loss, minimizing exposure to the environment, and simplifying change-outs.
Key Benefits of ErtelAlsop Pak® Cartridges
- Totally Enclosed System: Prevents leakage and atmospheric contamination.
- Scalability: Available in 12-inch and 16-inch diameters to fit various housing sizes.
- Rapid Change-Out: Modules can be replaced in minutes, significantly reducing downtime compared to redressing a press.
- High Solids Loading: Depth media structure allows for high dirt-holding capacity.
- Versatile Media Options: Compatible with MicroMedia®, AlphaMedia®, and MicroClear® series.
Product Variants and Media Types
ErtelAlsop offers several specific configurations to meet distinct process requirements. Choosing the right media formulation is critical for optimal performance.
1. Zeta-Pak® (Pharmaceutical & Fine Chemical)
The Zeta-Pak® is the workhorse of the product line. Incorporating inorganic filter aids (like Diatomaceous Earth) and wet strength resins, it offers a high positive zeta potential. This electrostatic charge attracts and holds negatively charged ultrafine particles, such as haze and pyrogens, making it ideal for pharmaceutical and high-purity applications.
2. Disc-Pak® (Industrial & Food Grade)
The Disc-Pak® utilizes AlphaMedia™, which is 100% cellulose and contains no inorganic filter aids or resins. This makes it perfect for applications where you want to avoid altering the product’s chemical composition or introducing extractables. It is widely used for dielectric oils, perfumes, syrups, and beverages.
Technical Specifications
The following table outlines the general specifications available for the Pak® Lenticular Cartridges. Custom configurations can often be engineered to meet unique site requirements.
| Feature | Specification |
|---|---|
| Filter Type | Depth Filtration Module |
| Diameters | 12″ (30.5 cm) and 16″ (40.6 cm) |
| Micron Ratings | 0.25 µm to 15 µm (Nominal) |
| Number of Cells | 5 to 18 stacked cells per module |
| End Cap Configurations | Flat Gasket, Double O-Ring (DO) |
| Core Material | Polypropylene (standard), Stainless Steel options |
| Gasket Materials | EPDM, Buna-N, Viton, Silicone, Teflon-Encapsulated |
Applications by Industry
Due to the versatile nature of the media, ErtelAlsop Pak® filters are deployed across a wide spectrum of industries. Below is a guide to common applications:
| Industry | Typical Applications | Recommended Series |
|---|---|---|
| Pharmaceuticals | Antibiotics, Vaccines, Blood Fractions, LVPs | Zeta-Pak®, Bio-Pak® |
| Food & Beverage | Distilled Spirits, Syrups, Soft Drinks, Wine, Beer | Zeta-Pak®, Disc-Pak® |
| Botanical Extraction | Hemp/CBD Oil Dewaxing, Ethanol Recovery, Lipid Removal | Zeta-Pak®, MicroMedia® |
| Chemical / Industrial | Dielectric Oils, Coolants, Varnishes, Inks | Disc-Pak® (AlphaMedia™) |
| Cosmetics | Perfumes, Colognes, Essential Oils, Lotions | Disc-Pak®, Zeta-Pak® |
Why Choose Purecowater?
At Purecowater, we don’t just supply parts; we provide engineered solutions. As precise distributors for top-tier manufacturers like ErtelAlsop, Veolia, and Fil-Trek, we understand the science behind solid-liquid separation. Whether you are sizing a new housing or troubleshooting premature fouling, our team can help you select the exact micron rating and media composition required to optimize your throughput.
We can assist with:
- Housing Selection: Vertical or horizontal housings compatible with Pak® cartridges.
- Process Optimization: Improving flow rates and extending filter life.
- Custom Orders: Specialized gaskets or media configurations.
Ready to Improve Your Filtration Efficiency?
If you are looking for technical data sheets, pricing, or advice on integrating ErtelAlsop Pak® Filters into your current system, reach out to our engineering team today.
Sources: ErtelAlsop, Clear Solutions.