Introduction to ErtelAlsop Pak® Lenticular Filters
At Purecowater, we specialize in providing advanced filtration solutions for complex liquid processing challenges. As a distributor for top-tier filtration manufacturers, we are proud to feature the ErtelAlsop Pak® Lenticular Filters. Ideally suited for applications requiring high solids loading and superior particle retention, these depth filter modules effectively bridge the gap between traditional plate and frame filters and modern cartridge filtration.
The ErtelAlsop Pak® creates a totally enclosed, airtight, and leak-proof system, ensuring product integrity and operator safety. Whether you are filtering botanical extracts, distilled spirits, or pharmaceuticals, these lenticular cartridges offer a scalable and efficient solution.
How Lenticular Filtration Works
The term “lenticular” refers to the shape of the filter cells, which resemble a stack of double convex lenses. Each module is constructed from multiple filter cells stacked vertically. A single cell consists of two precision-cut sheets of depth filter media, sealed around the edges using a patented polypropylene molding process. This design maximizes surface area within a compact footprint.
Liquid enters the housing and surrounds the module, passing through the media from the outside in. The filtrate then flows down the center core to the outlet. This tortuous path through the depth media (often impregnated with Diatomaceous Earth or Activated Carbon) traps particles not just on the surface but throughout the thickness of the media.
Key Benefits Over Plate & Frame Filters
- Zero Leakage: The enclosed housing design eliminates the dripping and leakage often associated with plate and frame presses.
- Reduced Downtime: “Pak” cartridges are designed for rapid change-outs, significantly reducing labor and maintenance time.
- Scalability: Available in 12-inch and 16-inch diameters with varying cell counts, allowing for easy scale-up from pilot to production.
- Standardization: Uses the same trusted MicroMedia® and AlphaMedia® formulations found in filter sheets, making process translation seamless.
Technical Specifications
The ErtelAlsop Pak® line is highly versatile, with over 300 precision configurations available to fit specific process needs. Below are the general specifications for the standard industrial and pharmaceutical grades.
| Feature | Specification Details |
|---|---|
| Diameters Available | 12 inch (30.5 cm) & 16 inch (40.6 cm) |
| Micron Retention Ratings | 0.25 µm to 15 µm (Nominal) |
| Cell Count per Module | 5 to 18 cells (Standard is often 16 cells) |
| Gasket Configurations | Flat Gasket, Double O-Ring (Bio-Pak®) |
| Gasket Materials | EPDM, Silicone, Viton, Buna-N |
| Core Material | Polypropylene (Standard), Stainless Steel optional |
| Filtration Surface Area | Up to 1.8 m² (approx 20 ft²) per 16″ module |
For more detailed specifications on sizing and media selection, please refer to the manufacturer data [ertelalsop.com](https://ertelalsop.com/lenticular-pak-cartridges/).
Media Types and Series
The performance of the Pak® filter is driven by the media selection. ErtelAlsop offers several specialized series:
- MicroMedia® (Cellulose, Perlite, DE): The workhorse series containing Diatomaceous Earth (DE). It offers high zeta potential for removing haze and ultrafine particles. It is excellent for spirits and clarifying applications.
- AlphaMedia® (Pure Cellulose): Used where zero mineral migration is required. Ideal for specific pharmaceutical or chemical applications where DE is not permitted.
- MicroClear® (Activated Carbon): Immobilized carbon sheets used for color correction, odor removal, and decolorization without the mess of bulk carbon powder.
Common Applications
Botanical Extracts and Hemp
Lenticular filters are a standard in the botanical extraction industry for winterization and lipid removal. The standard White Micro-Media series with DE is particularly effective at removing waxes and lipids while allowing for high flow rates [clearsolutionscorp.com](https://store.clearsolutionscorp.com/products/pak-lenticular-filter). The enclosed system prevents solvent evaporation, making it safer for ethanol-based processes.
Food & Beverage
From distilled spirits to syrups, the Pak® cartridges provide polishing filtration to ensure shelf stability and clarity. They effectively remove haze-forming colloids and particulates that can compromise final product quality.
Pharmaceuticals (Bio-Pak®)
For critical applications, the Bio-Pak® configuration utilizes a Double O-Ring seal and a rigid polypropylene core. This eliminates the need for a stainless steel center post in the housing and ensures a positive seal, critical for sterile or high-purity processing.
Housing Compatibility
ErtelAlsop Pak cartridges are designed to fit a wide range of housings.
- Vertical Housings: The standard orientation for most sanitary and industrial applications.
- Horizontal Housings: Featuring the “Lock and Load” system, these housings allow for waist-level loading of cartridges, improving operator ergonomics and safety.
For details on housing options, see the ErtelAlsop Housing text [ertelalsop.com](https://ertelalsop.com/depth-filtration-equipment/lenticular-filter-housings/).
Contact Purecowater Today
Are you looking to upgrade your filtration process from a messy plate and frame press to a clean, lenticular system? Purecowater can help you select the correct micron rating, media type, and housing configuration for your specific stream.