For industries requiring high-purity liquid filtration with superior solids retention, the ErtelAlsop Pak® Lenticular Filter Cartridges represent the gold standard in depth filtration technology. As a distributor for premier filtration solutions, Purecowater provides these versatile modules to tackle complex filtration challenges ranging from botanical extractions to pharmaceutical processing.
What is the ErtelAlsop Pak® Lenticular Filter?
The ErtelAlsop Pak® (also known as a lenticular module) is a depth filter cartridge designed to replace traditional plate and frame filter presses while retaining the benefits of depth media. The unit consists of stacked filter cells—resembling double convex lenses—assembled around a central polypropylene core. This design significantly increases the filtration surface area within a compact footprint, allowing for high flow rates and efficient particle retention.
These modules are engineered for use in a sealed housing, preventing fluid loss and ensuring a sanitary environment, which is a substantial upgrade over open frame systems.
Key Models and Media Types
ErtelAlsop offers diverse media formulations to suit specific compatibility and retention requirements. Purecowater can help you select the exact configuration for your process stream.
1. Zeta-Pak® (The Workhorse)
The Zeta-Pak® is the most common configuration, utilizing MicroMedia® which contains cellulose, filter aids (Diatomaceous Earth or Perlite), and a wet-strength resin. It creates a porous cake that effectively sieves out particulate matter.
- Best For: Removal of haze, waxes, lipids, and ultra-fine particles.
- Feature: Possesses a positive Zeta Potential, enhancing the adsorption of negatively charged contaminants.
- Applications: Botanical extracts, distilled spirits, chemicals, and bio-pharmaceuticals.
2. Disc-Pak® (Pure Cellulose)
The Disc-Pak® uses AlphaMedia®, which is 100% pure cellulose without inorganic filter aids (like DE or Perlite). This is critical for applications where mineral leaching is a concern.
- Best For: Dielectric oils, fragrances, and sensitive pharmaceutical applications.
- Feature: No inorganic extractables; preserves the integrity of active ingredients in delicate solutions.
3. MicroClear® (Activated Carbon)
These modules incorporate immobilized activated carbon within the depth media matrix, allowing for adsorption of color, odor, and impurities without the mess of loose carbon powder.
Technical Specifications
Below is a quick reference guide to the standard specifications for ErtelAlsop Lenticular Pak® cartridges available through Purecowater.
| Feature | Specification |
|---|---|
| Diameters | 12-inch (30.5 cm) and 16-inch (40.6 cm) |
| Micron Retention Ratings | 0.25 µm to 15 µm (Nominal) |
| Cell Count | 5 to 18 stacked cells per module |
| End Cap Configurations | Flat Gasket, Double O-Ring |
| Core Material | Polypropylene |
| Gasket Materials | EPDM (Standard), Buna-N, Viton, Silicone |
| Filtration Mechanism | Depth Filtration (Mechanical Sieving & Electrokinetic Adsorption) |
Primary Applications
The versatility of the Pak® design allows it to service a wide array of industrial and sanitary markets.
Life Sciences & Pharmaceuticals
Used for the clarification of cell cultures, removal of protein precipitates, and pre-filtration for membrane protection. The sanitary housing options make them compliant with stringent cleanliness standards.
Botanical Extraction & Hemp Processing
Specifically in ethanol extraction, the Zeta-Pak® is highly effective for “winterization”—the removal of waxes and lipids from the extract. The depth media provides high solids loading capacity, preventing premature blinding that often occurs with standard pleated cartridges.
Food & Beverage
From polishing distilled spirits to clarifying syrups and removing haze from wines, the ErtelAlsop Pak ensures product brilliance and stability.
Why Choose ErtelAlsop Pak®?
- Edge Seal Technology: The patented edge sealing process prevents bypass, ensuring 100% of the liquid passes through the media.
- Scalability: Over 300 precision dies allow for seamless scaling from lab-scale R&D to full production without changing media grades.
- Operator Safety: Enclosed systems reduce operator exposure to process fluids and hazardous fumes compared to open presses.
Looking for the Right Depth Filter Solution?
Whether you need to remove particulates from dielectric oil or clarify a botanical extract, Purecowater has the technical expertise to guide your selection. Using the correct media grade and micron rating is essential for maximizing throughput and minimizing cost.
Contact Purecowater today to discuss your filtration requirements or to request a quote for ErtelAlsop Pak® cartridges.