Introduction to ErtelAlsop Pak® Lenticular Filters
In the world of industrial liquid filtration, efficiency and containment are paramount. Whether you are filtering distilled spirits, pharmaceuticals, or botanical extracts, the transition from traditional plate and frame filtration to a closed system can revolutionize your process. ErtelAlsop Pak® Lenticular Filters represent this evolution, offering the high solids-loading capacity of depth filtration in a convenient, sealed modular format.
At Purecowater, we specialize in solving complex solid and liquid filtration problems. As a provider of premier filtration solutions, we are proud to offer ErtelAlsop’s line of lenticular cartridges, designed to streamline operations while maximizing retention efficiency.
What is a Lenticular Filter?
Lenticular filtration technology was originally invented by Alsop Engineering in the 1940s. A lenticular cartridge, or “module,” consists of a stack of depth filter cells. Each cell contains paired discs of filter media—such as cellulose impregnated with Diatomaceous Earth (DE) or Perlite—sealed at the edges.
The assembled unit resembles a stack of double convex lenses, hence the name “lenticular.” This design allows users to leverage the superior filtration quality of depth media (traditionally used in messy plate and frame presses) inside a totally enclosed housing. This eliminates leakage, reduces oxidation exposure, and significantly simplifies change-outs.
Key Benefits of the Pak® Cartridge System
Why do industries range from Food & Beverage to Chemicals choose ErtelAlsop Pak® cartridges?
- Closed System Design: Prevents product loss and eliminates external contamination. Ideal for sanitary applications and hazardous fluids.
- Rapid Change-Out: Unlike plate and frame filters that require hours to strip and dress, lenticular modules can be swapped in minutes.
- High Solids Loading: The depth media matrix captures particles throughout its thickness, not just on the surface, allowing for a high dirt-holding capacity.
- Scalability: Available in 12-inch and 16-inch diameters with varying cell counts to match your batch size and flow rate requirements.
Technical Specifications
When selecting a lenticular module, precision is key. ErtelAlsop cartridges are compatible with most standard lenticular housings on the market.
| Feature | Specification |
|---|---|
| Diameter Options | 12 inch (30.5 cm) & 16 inch (40.6 cm) |
| Micron Ratings | 0.25 µm to 15 µm (Nominal) |
| Number of Cells | Typically 5 to 18 stacked cells per module |
| End Configurations | Flat Gasket, Double O-Ring |
| Core Material | Polypropylene |
| Gasket Materials | EPDM, Silicone, Viton, Buna-N |
Available Media Configurations
ErtelAlsop offers distinct media formulations to target specific contaminants. Choosing the right media is critical for optimizing throughput and clarity.
1. MicroMedia® (XL, LXL, PXL Series)
The workhorse of depth filtration. These modules utilize high-purity cellulose heavily impregnated with filter aids like Diatomaceous Earth (DE) or Perlite.
Best For: Haze removal, difficult-to-filter liquids, and retention of ultra-fine particles.
2. AlphaMedia®
A cellulose-only media containing no inorganic filter aids.
Best For: Applications where minimal extractables are required or where DE is not permitted.
3. MicroClear®
Immobilized activated carbon included within the depth filter matrix.
Best For: Color correction, odor removal, and decolorization without the mess of loose carbon powder.
Applications Breakdown
The versatility of the Pak® Lenticular Cartridges allows them to serve a wide array of industries:
- Botanical Extracts: Excellent for winterization (wax/lipid removal) due to high flow rates and DE content.
- Distilled Spirits: Used for chill filtration and polishing to ensure clarity in shelf-stable products.
- Pharmaceuticals: Pre-filtration to protect expensive downstream membranes.
- Food & Beverage: Clarification of syrups, vinegars, and juices.
- Cosmetics: Purification of oils and fragrances.
Housing Compatibility
These cartridges are designed to fit into Lenticular Filter Housings, which are available in both vertical and horizontal orientations. The Horizontal “Lock and Load” design is particularly popular as it allows for ergonomic loading at waist height, enhancing operator safety and reducing downtime.
Ready to Optimize Your Filtration Process?
Whether you need to replace an existing module or design a new filtration skid, Purecowater provides the expertise and equipment you need. We can help you select the correct micron rating, media type, and housing configuration for your specific application.