High-Efficiency Depth Filtration for Critical Applications
For industries requiring precise filtration and high solids loading capacity, ErtelAlsop Pak® Lenticular Filters offer a superior solution. As a leading Authorized Distributor, Purecowater provides these advanced depth filter modules to replace traditional plate and frame systems, offering a cleaner, more efficient, and operator-friendly alternative.
The Pak® cartridge design combines the comprehensive filtration capabilities of depth filter sheets with the convenience of a modular, enclosed cartridge system. Whether for pharmaceutical processing, food and beverage production, or chemical manufacturing, these filters ensure product purity and process reliability.
What is a Lenticular Filter?
ErtelAlsop invented the lenticular format in the 1940s, revolutionizing depth filtration. A “Pak” cartridge consists of individual filtration cells stacked on a central core. Each cell is made of a pair of depth filter media discs—such as MicroMedia® or AlphaMedia®—sealed at the edges. This creates a unit that resembles a stack of double convex lenses, hence the name “lenticular.”
Unlike open plate and frame filters, lenticular cartridges operate inside a sealed housing. This design eliminates edge leakage, reduces fluid loss, and prevents external contamination, making it ideal for sanitary applications and hazardous fluids.
Key Features and Benefits
- Enclosed System: Prevents exposure to the atmosphere and eliminates leakage associated with plate and frame presses.
- Rapid Change-Out: Modules can be replaced in minutes rather than hours, significantly reducing downtime.
- Scalability: Available in 12-inch and 16-inch diameters with varying cell counts (5 to 18 cells) to match process flow rates.
- Variety of Media: Compatible with cellulose, diatomaceous earth (DE), perlite, and activated carbon media options.
- High Solids Loading: The depth media structure traps particles throughout the matrix, offering high retention capacity before fouling.
Filter Media Options
ErtelAlsop Pak® cartridges are versatile due to the wide range of media grades available. Choosing the right media is critical for optimizing throughput and retention.
| Media Series | Composition | Primary Application |
|---|---|---|
| AlphaMedia™ | 100% Cellulose | Ideal for applications requiring no DE or Perlite. Used in dielectric oils, syrups, and perfumes. |
| MicroMedia® | Cellulose / DE / Perlite / Resin | High-performance depth filtration for haze removal and sub-micron retention. Excellent for beverages and biologics. |
| MicroClear® | Activated Carbon / Cellulose | Adsorptive filtration for removing color, odor, and impurities without handling loose carbon powder. |
Technical Specifications
The Pak® cartridges are designed to fit standard lenticular housings and are available in configurations to suit retrofits and new installations.
| Diameter | 12 inch (30.5 cm) or 16 inch (40.6 cm) |
| Micron Ratings | Nominal ratings from 0.25 µm to 15 µm |
| End Cap Configurations | Flat Gasket or Double O-Ring |
| Core Material | Polypropylene |
| Gasket Material | EPDM (Standard), others available upon request |
| Cell Count | Standard stacks range from 5 to 18 cells |
Common Applications
Due to their versatility and enclosed design, ErtelAlsop Pak® filters are utilized across a broad spectrum of industries:
- Pharmaceuticals: Clarification of cell cultures, removal of protein precipitates, and activated carbon treatment.
- Food & Beverage: Haze removal in distilled spirits, wine polishing, syrup clarification, and flavor extraction.
- Cosmetics: Filtration of perfumes, essential oils, and lotions.
- Chemicals: Polishing of solvents, inks, paints, and resins.
- Cannabis/Botanical Extracts: Lipid and wax removal (winterization) using MicroMedia® chemistry.
Contact Purecowater for Filtration Solutions
As a distributor for premium filtration brands including Veolia and engineered solutions like ErtelAlsop, Purecowater is ready to assist with sizing and selecting the correct lenticular modules for your process.
Contact Us for Pricing and Technical Support
References: ertelalsop.com, clearsolutionscorp.com