Optimize your industrial filtration with the high-capacity, leak-free design of ErtelAlsop Pak® Lenticular Filters, now available through Purecowater.
Introduction to ErtelAlsop Pak® Lenticular Technology
In the world of liquid filtration, efficiency and scalability are paramount. ErtelAlsop Pak® Lenticular Filters represent a premium solution for depth filtration applications, combining the surface area advantages of plate and frame filters with the convenience of cartridge systems. As a trusted distributor, Purecowater offers these advanced filtration units to industries ranging from pharmaceuticals and cosmetics to food and beverage processing.
The Pak® system utilizes a unique lenticular design—stacked discs of depth filter media housing specialized cells—providing a massive surface area in a compact footprint. This design ensures superior clarification, polishing, and bio-burden reduction without the liquid loss associated with traditional filter presses.

How ErtelAlsop Pak® Lenticular Cartridges Work
The technology behind the Pak® Lenticular Filter is based on depth filtration. Unlike surface filters that trap particles only on the top layer, lenticular filters trap contaminants throughout the thickness of the media matrix. This multidimensional filtration path maximizes dirt-holding capacity and throughput.
Key Mechanism: The Edge-Seal Design
One of the standout features of the ErtelAlsop Pak® is its varying seal configurations. The cartridges are engineered to fit into a housing where they are compressed. The liquid enters the housing and is forced through the media from the outside of the disc to the center core (or vice versa depending on the specific model context, though standard lenticular flow is outside-in). This flow path minimizes leakage and bypass, ensuring high filtrate integrity.
Common Applications and Industries
ErtelAlsop filtration solutions are versatile. The table below outlines where the Pak® Lenticular Filters deliver the most value:
| Industry | Specific Applications | Benefits |
|---|---|---|
| Pharmaceuticals | API processing, Large Volume Parenterals (LVP), Vaccine purification | Low endotoxin levels, validatable reduction of bio-burden. |
| Food & Beverage | Distilled spirits, Wine clarification, High fructose corn syrup, Edible oils | Haze removal, flavor preservation, and high throughput. |
| Chemicals | Polymers, Silicones, Ink & Paints, Resins | High viscosity handling and excellent chemical compatibility. |
| Cosmetics | Fragrances, Essential oils, Lotions | Crystal clear polish and removal of particulate impurities. |
Product Specifications & Features
ErtelAlsop Pak® filters come in various configurations to suit different housing geometries and process requirements. They are typically available in 12-inch and 16-inch diameters.
- Media Grades: Available in a wide range of cellulose-based depth filter grades, including options with diatomaceous earth (DE) or perlite for enhanced filtration efficiency.
- Gasket/O-Ring Materials: Buna-N, EPR, Neoprene, Silicon, Viton, and Teflon to match chemical compatibility needs.
- Construction: Heavy-duty polypropylene core and end caps or electro-polished stainless steel options for sanitary applications.
- Zeta Potential: Many media grades possess a positive Zeta potential, enhancing the capture of negatively charged contaminants like bacteria and endotoxins.
Why Choose Lenticular over Plate & Frame?
While plate and frame filters have been the industry standard for decades, lenticular cartridges offer significant operational improvements:
- Closed System: Eliminates exposure to the atmosphere, preventing product oxidation and contamination.
- Quick Changeout: Cartridges can be replaced in minutes compared to the hours required for plate and frame disassembly and cleaning.
- Reduced Leakage: The enclosed housing design prevents product loss (drip-free operation).
- Scalability: Methods developed on small-scale lab discs scale linearly to full production lenticular cartridges.
Performance Data Comparison
| Feature | Standard Cartridge | ErtelAlsop Pak® Lenticular |
| Filtration Mechanic | Surface / Slight Depth | True Depth Filtration |
| Dirt Holding Capacity | Moderate | Extremely High |
| Surface Area | Limited by pleating | Stacked disc design maximizes area |
| Handling Viscosity | Low to Medium | Medium to High Viscosity |
Improve Your Process with Purecowater
Whether you are clarifying distilled spirits or removing haze from essential oils, ErtelAlsop Pak® Lenticular Filters provide the reliability and efficiency modern production lines require. As a distributor for industry-leading filtration brands, Purecowater ensures you get the exact specifications needed for your facility.
Ready to Upgrade Your Filtration System?
Contact our engineering team to discuss sizing, media compatibility, and implementation of ErtelAlsop filters in your process.