For industries requiring high-performance liquid filtration, ErtelAlsop Pak® Lenticular Filters represent a significant advancement in depth filtration technology. As a distributor/OEM for leading filtration brands, Purecowater provides these versatile modules to help tackle complex solid and liquid separation challenges.
The ErtelAlsop Pak® cartridge (also known as a lenticular module) offers a user-friendly, enclosed alternative to traditional plate and frame filters, combining superior particle retention with ease of use. Whether for food and beverage processing, pharmaceutical manufacturing, or industrial chemical applications, these filters are designed to ensure purity and efficiency.
What is a Lenticular Filter?
ErtelAlsop Pak® depth filter cartridges are assembled using a stacked disc design. The unit consists of multiple filter cells—typically ranging from 11 to 18 stacked cells per 12-inch or 16-inch module—held together by a rigid polypropylene core. Each cell is comprised of two depth filter sheets whose edges are sealed using a patented polypropylene injection process.
This construction resembles a stack of double convex lenses, giving the technology its name (“lenticular”). The design maximizes surface area within a compact footprint, allowing for high flow rates and exceptional solids loading capacity.
Key Advantages over Plate & Frame Filters
- Enclosed System: Unlike open plate and frame presses, lenticular modules operate inside sealed housings, preventing leakage and minimizing valuable product loss.
- Rapid Change-Out: Modules can be replaced in minutes rather than hours, significantly reducing downtime and labor costs.
- Safety: Ideal for handling hazardous chemicals or high-value pharmaceuticals where operator exposure must be minimized.
Product Specifications and Configurations
ErtelAlsop cartridges are engineered to fit a wide variety of filter housings and process requirements. Below are the standard specifications available through Purecowater.
| Feature | Specification Details |
|---|---|
| Diameter Options | 12-inch (30.5 cm) and 16-inch (40.6 cm) |
| Micron Ratings | Nominal retention from 0.25 µm to 15 µm |
| End Cap Configurations | Flat Gasket, Double O-Ring (222, 226) |
| Gasket Materials | EPDM, Viton, Silicone, Buna-N |
| Core Material | Polypropylene (standard), Stainless Steel options |
| Cell Count | Standard packs include 16 cells; custom stacks available |
Filter Media Technologies
The core performance of the Pak® Lenticular Filter comes from ErtelAlsop’s proprietary filter media. Depending on the application, users can select from several specialized media series:
1. Zeta-Pak® (MicroMedia®)
The workhorse of the product line, Zeta-Pak® incorporates uniform cellulose fibers and filter aids (such as diatomaceous earth or perlite) to create a complex matrix. These filters exhibit a positive Zeta Potential, which essentially acts as a magnet to attract and adsorb negatively charged particles (like haze, oils, or bacteria) that are smaller than the physical pore size of the media.
2. Bio-Pak® (AlphaMedia®)
Designed for critical pharmaceutical and biological applications, the Bio-Pak® series utilizes pure cellulose media without inorganic filter aids. This creates a low extractable reliable filter suitable for sensitive processing environments.
3. Disc-Pak® (MicroClear®)
This series integrates activated carbon directly into the filter matrix. It is the ideal solution for color correction, odor removal, and decolorization processes without the mess and handling issues associated with loose bulk carbon.
4. AquaKv-Pak®
Specifically engineered for the electric utility market, this media is designed to remove water and particulate contamination from transformer oils and other dielectric fluids.
Industrial Applications
Due to their versatility and enclosed design, ErtelAlsop Pak® cartridges are utilized across a broad spectrum of industries:
- Distilled Spirits & Wine: Haze removal, chill filtration, and polishing without affecting flavor profiles.
- Botanical Extracts: Removal of waxes and lipids from solvent-based extractions (utilizing solvent-compatible gaskets).
- Pharmaceuticals (API): Clarification of active pharmaceutical ingredients and catalyst removal.
- Chemicals & Solvents: Filtering paints, resins, inks, and expensive specialty chemicals.
- Cosmetics: Clarification of perfumes, lotions, and essential oils.
Why Choose Purecowater for Your Filtration Needs?
At Purecowater, we understand that selecting the right depth filtration system is critical to your process efficiency and product quality. As an authorized distributor, we provide not only the ErtelAlsop Pak® modules but also the technical expertise to integrate them into your existing workflow.
Whether you need to replace existing modules or size a new housing system, our team is ready to assist with sizing, compatibility checks, and supply chain management.
Need help selecting the right micron rating or media type for your application?
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