Introduction to ErtelAlsop Pak® Lenticular Filters
In the world of industrial and sanitary liquid processing, the
At Purecowater, we distribute these advanced filtration modules to solve complex clarification and particulate removal challenges. Whether you are operating in the pharmaceutical, food and beverage, or chemical sectors, the Pak® Lenticular Filter offers a scalable, leak-free solution designed to enhance your process integrity.
How Lenticular Filtration Works
Lenticular filters, often referred to as “modules” or “stacks,” consist of individual filter cells stacked mechanically on a central core. The term “lenticular” refers to the lens-like shape of these cells. This unique geometry maximizes the Effective Filtration Area (EFA) within a compact footprint.
The filtration process typically operates outside-in:
- Liquid enters the specialized housing and surrounds the filter module.
- Positive pressure forces the fluid through the depth media discs.
- Contaminants are trapped within the tortuous path of the media matrix (depth filtration).
- Clarified liquid flows into the central core and exits the system.
Key Benefits Over Plate & Frame Filters
| Feature | Plate & Frame Press | ErtelAlsop Lenticular Pak® |
|---|---|---|
| System Design | Open to atmosphere (drip trays required) | Totally enclosed (No leakage/evaporation) |
| Changeout Time | Slow (Hours) | Fast (Minutes) |
| Product Loss | Moderate due to leakage/holdup | Minimal |
| Operator Exposure | High | Low (Contained system) |
Technical Specifications & Media Options
ErtelAlsop Pak® cartridges are renowned for their versatility. They utilize various media grades, including the highly effective Zeta-Pak® series, which incorporates wet strength resins, cellulose, and filter aids like Diatomaceous Earth (DE) or Perlite. This composition imparts a positive Zeta Potential, allowing the filter to electrokinetically attract negatively charged contaminants (such as bacteria and endotoxins) that are smaller than the rated pore size.
Standard Configurations
- Diameters: Available in standard 12-inch (1.8 m² area approx.) and 16-inch (3.6 m² area approx.) formats.
- End Cap Styles:
- Flat Gasket: Standard for many industrial housings.
- Double O-Ring: Ensures a positive seal for critical sanitary applications.
- Micron Ratings: Ranging from nominal 0.25 micron up to 15+ micron for coarse clarifying.
- Core Material: Typically Polypropylene (for chemical resistance) or Stainless Steel options.
Performance Data Table
| Parameter | Details |
|---|---|
| Filtration Mechanism | Depth Filtration + Electrokinetic Adsorption (Zeta Potential) |
| Common Applications | Haze removal, polishing, protection of downstream membranes |
| Max Operating Temp | Dependent on Gasket/Core (Typically up to 180°F with standard inputs) |
| Sterilization | In-line steam sterilization (SIP) or hot water sanitization capable |
Industry Applications
The enclosed nature of the ErtelAlsop Pak® makes it the preferred choice for industries requiring hygiene, vapor containment, or hazardous material handling.
- Pharmaceuticals & Cosmetic: Removal of lipids, haze, and fine particulates from syrups, serums, and fragrances.
- Food & Beverage: Polishing of distilled spirits, wines, syrups, and botanical extracts. Excellent for removing waxes and haze in chilled filtration processes.
- Chemical & Utility: Clarification of dielectric oils, amine solutions, and specialty chemicals where operator safety is paramount.
Why Partner with Purecowater?
As a specialized distributor and OEM, Purecowater understands the nuances of depth filtration. We don’t just supply the cartridges; we assist in sizing the correct housing and selecting the optimal media grade to maximize your throughput and service life.
Whether you are upgrading from an old plate and frame press or designing a new filtration skid, the ErtelAlsop Pak® system offers a modern, efficient solution.
Need assistance selecting the right lenticular filtration system?
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