At Purecowater, we understand that efficient liquid filtration is critical for industrial, pharmaceutical, and food & beverage processes. As a distributor and OEM for top-tier filtration manufacturers, we are proud to feature ErtelAlsop Pak® Lenticular Filters. These cartridges represent the evolution of depth filtration, combining the superior retention of plate and frame filters with the convenience and safety of an enclosed cartridge system.
What are ErtelAlsop Pak® Lenticular Filters?
ErtelAlsop Pak® depth filter cartridges (often called lenticular modules) are advanced filtration units designed to remove particulates, reduced haze, and polish liquids. Unlike surface filters that trap particles only on the top layer, these depth filters utilize a thick media matrix to trap particles throughout the depth of the material, offering significantly higher solids loading capacity.
The “Lenticular” design consists of individual filter cells stacked onto a central core. Each cell is formed by two discs of filter media sealed around the edges. This stacked configuration resembles a series of double convex lenses, maximizing surface area within a compact footprint.
The “Plate and Frame” Alternative
For decades, plate and frame filter presses were the standard. However, they often suffer from leakage and labor-intensive change-outs. The ErtelAlsop Pak® system places the same high-quality filter media inside a totally enclosed, pressurized housing. This ensures:
- Zero Leakage: Ideal for hazardous, valuable, or messy fluids.
- Rapid Change-Outs: Cartridges can be replaced in minutes rather than hours.
- Sanitary Design: Reduces exposure to the atmosphere, protecting product purity.
Why Choose Lenticular Technology?
Lenticular cartridges are the perfect bridge between capacity and convenience. They offer the high dirt-holding capacity of depth sheets with the ease of use of a cartridge.
Technical Specifications
ErtelAlsop Pak® cartridges are available in a variety of configurations to fit standard housings and specific process requirements. Below is a breakdown of the standard specifications.
| Specification | Details |
|---|---|
| Diameters Available | 12 inch (30.5 cm) & 16 inch (40.6 cm) |
| Number of Cells | Stackable from 5 to 18 cells per module |
| Micron Ratings (Nominal) | 0.25 µm to 15 µm |
| End Cap Configurations | Flat Gasket or Double O-Ring (DO) |
| Core Material | Polypropylene (standard), others available |
| Gasket Material | EPDM, Silicone, Viton, Buna-N |
| Filtration Mechanism | Depth Filtration, Adsorption (Zeta Potential) |
Available Media Formulations
ErtelAlsop offers distinct media series to target specific contaminants. Choosing the right media is crucial for optimizing flow rate and retention.
1. Zeta-Pak® (MicroMedia®)
The workhorse of the industry. These modules utilize cellulose filter aids impregnated with Diatomaceous Earth (DE) or Perlite. They possess a positive zeta potential, allowing them to electrokinetically attract negatively charged sub-micron particles (like haze or bacteria) that might otherwise pass through the pore structure.
2. Disc-Pak® (AlphaMedia®)
Designed for applications where no inorganic filter aids (like DE) are permitted. These are made from 100% cellulose. They are ideal for dielectric oils, perfumes, and applications requiring high chemical purity without mineral leaching.
3. Bio-Pak® (Pharmaceutical Grade)
Specialized for the pharmaceutical and biological industries. These cartridges meet strict testing requirements for extractables and biological safety.
Key Applications
The versatility of the Pak® Lenticular Cartridges allows them to serve a wide range of industries.
| Industry | Common Uses |
|---|---|
| Food & Beverage | Haze removal in syrups, soft drinks, beer, and wine polishing. |
| Distilled Spirits | Removal of fatty acids (floc), char, and barrel residue. |
| Pharmaceuticals | Clarification of broths, pre-filtration for membrane protection. |
| Botanical Extracts | Lipid and wax removal (winterization) in cannabis/hemp extraction. |
| Chemicals & Cosmetics | Polishing perfumes, essential oils, and process fluids. |
| Utility Fluids | Filtration of dielectric oils and transformer fluids. |
Ready to Upgrade Your Filtration?
Whether you are replacing an old plate and frame press or designing a new filtration skid, Purecowater can assist in sizing and selecting the correct ErtelAlsop Pak® Lenticular Filters for your operation.