Introduction to ErtelAlsop Pak® Lenticular Filters
For industrial applications requiring high-efficiency particulate retention and superior flow rates, ErtelAlsop Pak® Lenticular Filters act as a critical solution in depth filtration. These modules, often referred to as lenticular cartridges, combine the technology of depth filter sheets with the ease of use of an enclosed cartridge system. Designed to replace standard plate and frame filters, they offer a scalable and leak-free alternative for industries ranging from pharmaceuticals to chemical processing.
As a distributor/OEM for major filtration brands, Purecowater provides access to these advanced filtration modules to tackle complex solid/liquid separation challenges.
How Pak® Lenticular Filters Work
The “Lenticular” design consists of filter cells stacked vertically to form a cartridge. Each cell is constructed from two discs of depth filter media, sealed at the outer edges using a patented polypropylene molding process. This construction mimics a “double convex lens” shape. Liquid flows from the outside of the cartridge, through the media, and into the central core, trapping particulates within the depth of the media matrix.
This design utilizes Zeta-Pak® technology or other media formulations like Micro-Media®, which often incorporate Diatomaceous Earth (DE) or activated carbon. The media provides a tortuous path for fluids, offering distinct advantages:
- Zeta Potential: Electrokinetic adsorption helps retain ultra-fine particles smaller than the mechanical rating of the filter [store.clearsolutionscorp.com].
- High Solids Loading: The depth structure allows for significant contaminant holding capacity before a pressure drop occurs.
- Mechanical Sieving: Effective removal of suspended solids, waxes, and lipids, particularly in botanical extracts [store.clearsolutionscorp.com].
Product Specifications and Configurations
ErtelAlsop Pak® modules are highly customizable to fit various housing types and process requirements. They are typically available in 12-inch and 16-inch diameters with various end (adapter) configurations.
Technical Specifications
| Feature | Specification Details |
|---|---|
| Diameters Available | 12 inch (30.5 cm), 16 inch (40.6 cm) |
| Micron Ratings | Nominal ratings from 0.25 µm to 15 µm [ertelalsop.com] |
| Cell Count | Typically 5 to 18 stacked cells per module |
| Core Material | Polypropylene |
| Gasket Materials | EPDM, Buna-N, Viton, Silicon, Teflon Encapsulated |
| End Configurations | Flat Gasket, Double O-Ring [store.clearsolutionscorp.com] |
Media Formulations
The versatility of the Pak® cartridge lies in the choice of media:
- Micro-Media®: Cellulose and filter aid (DE) for high-efficiency haze removal. Ideal for botanical extracts and spirits.
- AlphaMedia™: Pure cellulose for applications where DE is not permitted.
- MicroClear®: Immobilized activated carbon for color and odor correction without the mess of bulk carbon.
Key Applications
The enclosed nature of lenticular housings makes these filters ideal for applications requiring hygiene, safety, and minimal product loss. Specifically, the optional pharmaceutical-grade materials ensure compliance with rigorous industry standards.
| Industry | Use Case |
|---|---|
| Botanical Extraction | Removal of waxes, lipids, and fine particulates; compatible with ethanol solvents [store.clearsolutionscorp.com]. |
| Food & Beverage | Clarification of syrups, distilled spirits, and wines. |
| Pharmaceuticals | API solvent filtration and catalyst recovery (e.g., removing platinum) [ertelalsop.com]. |
| Chemical Processing | Silicone production and specialty chemical filtration. |
| Utility | Dielectric fluid maintenance and transformer oil purification (AquaKv-Pak®) [ertelalsop.com]. |
Data and Operational Considerations
When selecting a Pak® Lenticular filter, operators should consider flow rate and housing compatibility. Standard industrial housings can handle flow rates up to 375 liters per minute per housing, often mounted in series or parallel for increased throughput [ertelalsop.com].
Changeout Efficiency: Unlike plate and frame presses, which can be labor-intensive to clean and reload, lenticular modules can be changed out quickly within a closed housing, reducing downtime and exposure to process fluids.
Ready to Optimize Your Filtration Process?
Whether you need to remove lipids from botanical extracts or clarify industrial chemicals, Purecowater can assist in sizing and supplying the correct ErtelAlsop configuration for your facility.