For industrial filtration applications requiring high solids loading capacity and precision particle retention, ErtelAlsop Pak® Lenticular Filters stand out as a premier solution. As a distributor and OEM for top-tier filtration technologies, Purecowater provides these advanced depth filtration modules to replace traditional plate and frame systems with a closed, leak-free, and user-friendly design.
What Are ErtelAlsop Pak® Lenticular Filters?
ErtelAlsop Pak® cartridges, often referred to as lenticular filter modules, are depth filters constructed from stacked filter cells. Each cell consists of a pair of depth filter media sheets (such as MicroMedia® or AlphaMedia®) sealed at the edges using a patented polypropylene process. This assembly resembles a stack of double convex lenses, giving the technology its “lenticular” name.
Designed to fit into totally enclosed housings, these cartridges offer the superior filtration performance of depth media sheets without the labor-intensive maintenance and open-air exposure associated with traditional filter presses [ertelalsop.com].
Key Benefits and Features
Switching to a lenticular cartridge format offers distinct operational advantages for facilities processing chemicals, food and beverages, pharmaceuticals, and botanical extracts.
- Highly Efficient Particle Retention: Utilizing ErtelAlsop’s diverse media grades, these filters provide nominal retention ratings ranging from 0.25 to 15 microns, suitable for everything from haze removal to microbial reduction [ertelalsop.com].
- High Solids Loading: The complex matrix of fibers and filter aids (like Diatomaceous Earth) within the media creates a tortuous path for fluids, allowing the filter to trap a significant volume of deformable and non-deformable solids before blinding.
- Enclosed System Design: Unlike plate and frame filters, lenticular Paks operate inside sealed housings. This prevents leakage, minimizes product loss, and protects operators from exposure to process fluids—critical for sanitary and hazardous applications [ertelalsop.com].
- Rapid Change-Out: The pre-assembled module design drastically reduces downtime. Operators can replace a stack of filters in minutes rather than the hours often required to dress a filter press.
Detailed Technical Specifications
ErtelAlsop filters are available in a variety of configurations to match existing housings and specific process requirements. Below are the standard specifications available through Purecowater.
| Feature | Specification |
|---|---|
| Filter Type | Depth Filtration / Lenticular Module |
| Micron Ratings | 0.25 µm to 15 µm (Nominal) |
| Diameters | 12 inch (30.5 cm) and 16 inch (40.6 cm) |
| Cell Count | Typically 5 to 18 cells per module |
| End Cap Configurations | Double O-Ring, Flat Gasket |
| Core Material | Polypropylene |
| Gasket Material | EPDM, Buna-N, Silicone, Viton, etc. |
Media Formulations
The performance of the Pak® cartridge is driven by the specific media formulation used:
- Micro-Media®: Incorporates cellulose and filter aids (Diatomaceous Earth or Perlite) to form a rigid, porous cake. It allows for high flow rates and superior retention of ultra-fine particles, making it ideal for haze removal in spirits and botanical extracts [clearsolutionscorp.com].
- AlphaMedia®: A 100% cellulose formulation free from inorganic filter aids. This is critical for applications where low extractables are required, such as dielectric oils, sensitive chemical processing, or where Diatomaceous Earth is not permitted [clearsolutionscorp.com].
- MicroClear®: Activated carbon-impregnated media used for decolorization, odor removal, and correcting off-tastes without the mess of handling bulk carbon powder.
Common Applications
Due to their versatility and enclosed design, ErtelAlsop Pak® filters are widely used across industries:
Food & Beverage
Clarification of syrups, distilled spirits, wines, and juices. The filters effectively remove waxes, lipids, and haze-forming particles [clearsolutionscorp.com].
Pharmaceuticals & Cosmetics
Used for perfumes, essential oils, and intermediate chemical polishing where product purity and sanitary handling are paramount.
Botanical Extracts
Excellent for winterization and wax removal in ethanol extraction processes, providing high throughput while protecting downstream equipment.
Contact Purecowater for Filtration Solutions
Whether you need to upgrade from a plate and frame press or require specific media formulations for a new process line, Purecowater can assist with sizing, selection, and supply of ErtelAlsop Pak® cartridges and housings.