Introduction to ErtelAlsop Pak® Lenticular Filters
At Purecowater, we specialize in solving complex solid and liquid filtration challenges. As a distributor utilizing top-tier filtration technologies, we are proud to feature the ErtelAlsop Pak® Lenticular Filter line. These depth filter cartridges—often referred to as modules—represent a significant evolution in filtration technology, combining the high-performance media of traditional plate and frame filters with the convenience and safety of an enclosed cartridge system.
Whether you are in the pharmaceutical, food and beverage, or chemical utility industry, lenticular functionality offers a streamlined solution for high-efficiency particle retention and solids loading.
What is a Lenticular Filter?
The ErtelAlsop Pak® cartridge is constructed from varying numbers of stacked lenticular filter cells. Each cell consists of a pair of depth filter media sheets (such as MicroMedia® or AlphaMedia®) bonded at the edges using a patented process. The resulting shape resembles a double convex lens, which gives the technology its “lenticular” name [ertelalsop.com].
This design allows existing process specifications using plate and frame filters to be easily translated to the lenticular format. The primary advantage is the totally enclosed design, which eliminates the leakage often associated with plate and frame presses, ensuring a cleaner, safer, and more operator-friendly environment.
Key Advantages
- Enclosed System: Prevents fluid loss and protects operators from exposure to process fluids.
- High Efficiency: Nominal retention ratings range from 0.25 to 15 microns.
- Scalability: Available in 12-inch and 16-inch diameters with varying cell counts (5 to 18 cells) to match surface area requirements.
- Rapid Change-out: Modules can be replaced quickly compared to re-dressing a filter press, significantly reducing downtime.
Media Configurations and Options
The versatility of the ErtelAlsop Pak® lies in its wide range of media options. Depending on your specific application—whether you need to remove waxes from botanical extracts or filter dielectric oils—there is a specific “Pak” designed for the job.
1. Zeta-Pak® (The Workhorse)
The Zeta-Pak® is the most common configuration, utilizing Micro-Media® composed of cellulose and filter aids (Diatomaceous Earth or Perlite). It provides high flow rates, excellent zeta potential, and superior retention of ultra-fine particles. It is ideal for general applications in life sciences and food & beverage [store.clearsolutionscorp.com].
2. Disc-Pak® (100% Cellulose)
For applications where the addition of Diatomaceous Earth (DE) or Perlite is not strictly required or allowed, the Disc-Pak® is the solution. Made from AlphaMedia® (100% cellulose), it is perfect for dielectric oils, perfumes, and removing particulates without affecting active ingredients [clearsolutionscorp.com].
3. MicroClear® (Activated Carbon)
This configuration incorporates activated carbon directly into the filter matrix, allowing for color correction, odor removal, and the adsorption of impurities without handling loose carbon powder.
Technical Specifications
Below is a comprehensive breakdown of the ErtelAlsop Pak® specifications to help you determine the right fit for your housing and process.
| Feature | Specification Details |
|---|---|
| Micron Ratings | 0.25 µm – 15 µm (Nominal) |
| Module Diameters | 12 inch (30.5 cm) & 16 inch (40.6 cm) |
| End Cap Configurations | Flat Gasket (Standard) or Double O-Ring |
| Core Material | Polypropylene |
| Gasket Materials | EPDM, Buna-N, Silicone, Viton, Teflon Encapsulated |
| Stack Height (Cells) | Typically 5 to 18 stacked cells per module |
| Sterilization | Steam-in-place (SIP) capable / Hot water sanitizable |
Common Applications
Due to the versatility of the media and the enclosed nature of the housings, ErtelAlsop Pak® filters are used across a wide spectrum of industries:
- Botanical Extracts: Removal of waxes and lipids using DE-impregnated media.
- Distilled Spirits: Chill haze removal and particulate filtration.
- Pharmaceuticals: Clarification of cell cultures and removal of precipitates.
- Cosmetics: Purification of perfumes and lotions without altering scent profiles.
- Industrial Utilities: Filtration of lubricating oils, coolants, and dielectric fluids.
Integration with Filter Housings
ErtelAlsop Pak® cartridges are designed to fit into Lenticular Filter Housings. These housings are available in vertical or horizontal orientations. The horizontal “lock and load” design is particularly popular as it allows for single-operator loading and reduces overhead height requirements [ertelalsop.com].
For more information on sizing, compatibility, or to request a quote for ErtelAlsop Pak® Lenticular Filters, please contact the filtration experts at Purecowater.