Introduction to ErtelAlsop Pak® Lenticular Filters
For industries requiring rigorous liquid filtration with high solids loading capacity, the ErtelAlsop Pak® Lenticular Filters stand as a premier solution. As a continuation of the depth filtration technology pioneered by Alsop Engineering, these cartridges (modules) combine the filtration efficiency of traditional plate and frame presses with the convenience and safety of a totally enclosed customized housing design.
At Purecowater, we supply these advanced lenticular modules to help you tackle complex solid and liquid filtration problems. Whether you are processing pharmaceuticals, food and beverages, or industrial chemicals, the Pak® design ensures varying grades of retention and flow rates to meet specific process requirements.
What is a Lenticular Filter?
Lenticular cartridges, often referred to as modules, are assembled from varying numbers of filter cells stacked on a central core. Each cell consists of a pair of depth filter media sheets—such as ErtelAlsop MicroMedia® or AlphaMedia®—sealed at the edges using a patented polypropylene molding process. This assembly resembles a stack of double convex lenses, giving rise to the name “lenticular”.
Key Benefits
- Closed System: Unlike open plate and frame filters, lenticular housings are totally enclosed, preventing leakage and reducing exposure to the product.
- Scalability: Available in 12-inch and 16-inch diameters with cell counts usually ranging from 5 to 16+ cells, allowing for precise surface area sizing.
- Efficiency: Provides nominally rated retention from 0.25 to 15 microns with high solids loading capacity.
- Easy Maintenance: The cartridge format allows for rapid change-outs, minimizing downtime compared to changing individual filter sheets.
Product Configurations and Media Types
ErtelAlsop offers distinct product lines within the Pak® family to suit different chemical compatibilities and filtration goals. Choosing the right media is critical for optimizing throughput and clarity.
| Product Family | Media Composition | Primary Applications |
|---|---|---|
| Zeta-Pak® | Cellulose & Diatomaceous Earth (DE) | The “workhorse” for haze removal, botanical extracts, and general fine particulate retention. High positive zeta potential for removing negatively charged contaminants. Clear Solutions |
| Disc-Pak® | 100% Cellulose (AlphaMedia®) | Ideal for dielectric oils, syrups, and cosmetics where Diatomaceous Earth (DE) is not desired. Ensures no alteration of sensitive active ingredients. Clear Solutions |
| Bio-Pak® | Pharmaceutical Grade Media | Designed for critical applications in biologics and pharmaceutical processing requiring low extractables. |
Technical Specifications
Understanding the mechanical specifications is essential for ensuring compatibility with your existing housings and process parameters.
- Diameters Available: 12 inch (30.5 cm) and 16 inch (40.6 cm).
- Micron Ratings: 0.25 µm, 0.45 µm, 1.0 µm, 2.5 µm, 5.0 µm, 10.0 µm, and 15.0 µm Clear Solutions.
- End Cap Configurations:
- Double O-Ring: Provides a secure seal for critical filtration.
- Flat Gasket: Standard for many industrial housings.
- Core Material: Polypropylene (standard).
- Gasket Materials: EPDM, Silicone, Viton, etc., depending on solvent compatibility.
Common Applications
The versatility of the ErtelAlsop Pak® series makes it a staple across various industries:
- Botanical Extracts: Perfect for winterization and dewaxing. The Zeta-Pak’s DE content aids in removing lipids and waxes while maintaining high flow rates Clear Solutions.
- Food & Beverage: Polishing distilled spirits, filtering sugar syrups, and clarifying wine.
- Industrial & Chemical: Filtration of lubricating oils, dielectric oils, and process water in utilities Clear Solutions.
- Pharmaceuticals: Pre-filtration for sterile lines and API purification.
Solving Your Filtration Challenges
Purecowater is your trusted partner for sourcing high-quality filtration media. Whether you are replacing old plate and frame presses or designing a new closed-loop system, the ErtelAlsop Pak® Lenticular Cartridges provide the reliability and efficiency you need.
Need help sizing your lenticular filter housing or selecting the right media grade?
Contact Us Today