For industries requiring superior liquid clarification and solids removal, ErtelAlsop Pak® Lenticular Filters represent the gold standard in depth filtration technology. As a distributor for top-tier filtration manufacturers, Purecowater provides these high-efficiency lenticular modules to help facilities transition from labor-intensive plate and frame filters to a more streamlined, enclosed system.
What Are ErtelAlsop Pak® Lenticular Filters?
ErtelAlsop Pak® cartridges—often referred to as depth filter modules—are assembled units comprised of stacked lenticular filter cells. Each cell contains a pair of premium depth filter media sheets (such as MicroMedia®, AlphaMedia®, or MicroClear®) sealed securely at the edges using a patented polypropylene process. The resulting stack resembles a series of double convex lenses, giving the product its “lenticular” name.
These filters are designed for depth filtration, meaning they trap particles not just on the surface but throughout the thickness of the media matrix. This design provides exceptionally high solids loading capacity and is critical for applications involving haze removal, dewaxing, and fine particulate retention.
Key Features and Technologies
The ErtelAlsop Pak® line is engineered to solve complex filtration challenges through advanced material science:
- Zeta Potential (Zeta-Pak®): Many modules, particularly those using MicroMedia®, possess a positive electrokinetic charge (zeta potential). This attracts and holds negatively charged distinct particles (like bacteria, endotoxins, and haze colloids) that are smaller than the physical pore size of the media.
- Scalable Formats: Available in 12-inch and 16-inch diameters with varying cell counts (5 to 18 cells), allowing for precise sizing based on batch volume and flow rate requirements.
- Leak-Free Design: The patented edge-sealing process eliminates bypass, ensuring that 100% of the liquid passes through the filter media.
- User-Friendly Housing: Unlike traditional plate and frame presses which can be messy and time-consuming to change, lenticular modules are easily loaded into vertical housings, significantly reducing downtime and cleaning costs.
Technical Specifications
Below is a breakdown of the standard specifications for the ErtelAlsop Zeta-Pak® and standard Pak® modules available through Purecowater.
| Specification | Details |
|---|---|
| Diameter Options | 12″ (30.5 cm) and 16″ (40.6 cm) |
| Micron Ratings (Nominal) | 0.25, 0.3, 0.45, 0.8, 1.0, 2.5, 5.0, 10.0, 15.0 µm |
| Standard End Caps | Flat Gasket, Double O-Ring (222/226 style) |
| Gasket Material | EPDM (Standard), others available upon request |
| Core Material | Polypropylene |
| Media Options | MicroMedia®: Cellulose + Filter Aid (DE/Perlite) AlphaMedia®: 100% Cellulose MicroClear®: Immobilized Activated Carbon |
| Surface Area | Varies by cell count (approx. 1.8 m² for a 16-cell 12″ module) |
Common Applications
ErtelAlsop lenticular filters are versatile “workhorses” used across a wide spectrum of industries. Their ability to handle high solids loads makes them particularly effective for:
1. Botanical Extraction & Hemp Processing
The Zeta-Pak® is industry-standard for winterization and dewaxing. The media, often impregnated with Diatomaceous Earth (DE), efficiently captures lipids, waxes, and fats from ethanol extracts while maintaining high flow rates.
2. Distilled Spirits & Beverages
Used for “chill filtration” and haze removal in whiskeys, brandies, and vodkas. The filters polish the spirit without stripping essential flavor profiles or color, ensuring a crystal-clear shelf product.
3. Pharmaceuticals & Cosmetics
Ideal for clarifying syrups, fragrances, and active pharmaceutical ingredients (APIs). The pharmaceutical-grade options ensure compliance with strict purity standards.
4. Chemical Processing
Reliable removal of catalysts, carbon fines, and precipitates from specialty chemical batches.
Why Choose Lenticular Over Plate & Frame?
Many facilities upgrade to ErtelAlsop Pak® modules to improve operational efficiency. While plate and frame filters use loose sheets that can drip and require manual alignment, lenticular modules are self-contained. This results in:
- Zero Drip Loss: Enclosed housings prevent product loss and maintain a cleaner production floor.
- Rapid Change-Outs: Swapping a module takes minutes compared to the hours often required to dress a press.
- Consistent Quality: Pre-assembled modules eliminate operator error in sheet alignment.
Get a Quote for ErtelAlsop Filters
Purecowater is equipped to supply the full range of ErtelAlsop media and housings. Whether you need a single replacement module or a complete skid-mounted filtration system, our team can engineer the right solution for your process.
Contact Us to discuss your filtration requirements and pricing.