Advanced Depth Filtration for Industrial Applications
At Purecowater, we understand that achieving superior liquid clarity often requires more than standard filtration methods. As a distributor and OEM for top-tier filtration companies, we are proud to offer ErtelAlsop Pak® Lenticular Filters. These depth filter modules represent a significant upgrade from traditional plate and frame filters, offering a totally enclosed, sanitary, and user-friendly solution for rigorous filtration challenges.
Whether you are in the pharmaceutical, food and beverage, or chemical sector, the ErtelAlsop Pak series provides high solids loading capacity and precision particle retention. [ertelalsop.com]
What Are Lenticular Filter Cartridges?
The “Lenticular” design (often called a module or stack) consists of individual filter cells stacked vertically. Each cell is comprised of a pair of depth filter sheets (such as MicroMedia® or AlphaMedia®) with their edges sealed by a patented polypropylene process. This stacked design resembles a series of double convex lenses.
Unlike traditional flat sheets, this configuration fits inside a sealed housing, eliminating the dripping, leakage, and air exposure often associated with plate and frame presses. This makes them ideal for applications requiring a closed-loop system to protect product purity and operator safety.
Key Product Variations
The ErtelAlsop line is versatile, offering distinct media formulations to target specific contaminants.
1. Zeta-Pak® (The Workhorse)
The Zeta-Pak® is the industry standard for general filtration. It utilizes Micro-Media, which incorporates Diatomaceous Earth (DE) and high-performance cellulose. This combination creates a complex matrix that not only mechanically strains particles but also utilizes electrokinetic adsorption (zeta potential) to capture sub-micron contaminants like haze and colloids.
- Best For: Botanical extracts, spirits, beer/wine polishing, and removal of fine particulate matter.
- Features: High flow rate, superior retention of ultra-fine particles. [store.clearsolutionscorp.com]
2. Disc-Pak® (100% Cellulose)
For applications where mineral filter aids like DE or Perlite are not permitted, the Disc-Pak® is the optimal choice. It uses AlphaMedia, a pure cellulose media.
- Best For: Dielectric oils, perfumes, pharmaceutical syrups, and lubricating oils.
- Why Use It: Prevents the leaching of mineral ions or alteration of active ingredients in sensitive fluids. [clearsolutionscorp.com]
Technical Specifications
The Pak® cartridges are designed to fit a wide variety of housings, making them a flexible option for retrofitting existing systems.
| Specification | Details |
|---|---|
| Diameter Options | 12 inch (30.5 cm) & 16 inch (40.6 cm) |
| Micron Retention | 0.25 µm to 15 µm (Nominal) |
| Number of Cells | 5 to 18 cells per stack |
| End Cap Configurations | Flat Gasket, Double O-Ring (Code 3, Code 8 styles) |
| Core Material | Polypropylene |
| Media Types | MicroMedia® (DE/Cellulose), AlphaMedia® (Pure Cellulose), MicroClear® (Carbon) |
Primary Applications
Due to the scalable nature of the Pak® system, these filters are used across diverse industries. The ability to switch media grades without changing the housing hardware makes them incredibly versatile.
| Industry | Application Example |
|---|---|
| Botanical Extracts | Removal of waxes and lipids; winterization filtration using DE media. |
| Distilled Spirits | Chill haze removal and polishing before bottling. |
| Pharmaceuticals | Clarification of syrups, LVPs, and process fluids. |
| Cosmetics | Filtration of perfumes and lotions to ensure clarity and texture. |
| Power Generation | Dielectric oil filtration and maintenance. |
Why Upgrade from Plate and Frame?
While plate and frame filters have been used for decades, they suffer from edge leakage and labor-intensive assembly. The ErtelAlsop Pak® lenticular system solves these issues:
- Reduced Downtime: Cartridges can be changed out in a fraction of the time it takes to dress a press.
- Hygiene: The enclosed housing prevents outside contamination and protects the operator from the process fluid.
- Minimal Product Loss: The heel volume in lenticular housings is significantly lower, increasing yield.
Need Help Selecting the Right Filter?
Choosing between Zeta-Pak, Disc-Pak, or other depth media requires analyzing your specific fluid viscosity, solid load, and chemical compatibility. Purecowater is here to assist you in engineering the perfect filtration skid or replacement plan.
Improve Your Filtration Efficiency Today
Contact us to discuss your solid & liquid filtration problems and get a quote on ErtelAlsop Pak Filters.