ErtelAlsop Pak Lenticular Filters: Comprehensive Product Guide

Introduction to ErtelAlsop Pak® Lenticular Filters

In the world of industrial liquid filtration, efficiency and reliability are paramount. Purecowater is proud to distribute the ErtelAlsop Pak® Lenticular Filter series, a solution that combines the superior filtration performance of depth media with the convenience of a closed, modular system. Originally invented by Alsop Engineering in the 1940s, the lenticular cartridge format has evolved into a standard for applications requiring high solids loading and precise particle retention.

This guide explores the functionality, specifications, and applications of the ErtelAlsop Pak system, demonstrating why it serves as the perfect upgrade from traditional plate and frame filter presses.

What is a Lenticular Filter?

The ErtelAlsop Pak® offers a chemically and mechanically robust depth filtration solution. Unlike surface filters that trap particles only on the top layer, lenticular filters utilize a thick, porous media that traps contaminants throughout its depth. This “tortuous path” captures particles mechanically and, in the case of the Zeta-Pak®, electrokinetically via zeta potential.

The unique design consists of stacked filter cells (discs) assembled into a pre-compressed cartridge. This design is totally enclosed within a housing, preventing leakage and ensuring a sanitary environment—a significant advantage over open plate and frame systems.

Key Features

• Closed System Design: Prevents product loss and eliminates leakage often associated with plate and frame filters.
• Rapid Change-Out: Modularity allows for quick cartridge replacement, significantly reducing downtime.
• Scalability: Available in 12-inch and 16-inch diameters to suit various flow rates and batch sizes.
• Multiple Media Options: Compatible with varying grades of MicroMedia®, offering specific retentions for different industries.

Technical Specifications

The ErtelAlsop Pak® series is versatile, available in configurations that fit most standard lenticular housings. Below are the core specifications for the Zeta-Pak® and standard Pak® modules.

Primary Applications

Due to their high solids loading capacity and ability to remove haze and ultra-fine particulates, ErtelAlsop Pak filters are utilized across a wide spectrum of industries.

1. Botanical Extracts & Essential Oils

When filtering botanical extracts, removing waxes, lipids, and fine particulates is critical for product clarity. The Zeta-Pak®, often impregnated with Diatomaceous Earth (DE), excels here. The depth media efficiently absorbs lipids while maintaining high flow rates.

2. Distilled Spirits & Beverages

For haze removal in spirits or microbial reduction in beverages, the lenticular format provides a polished finish without affecting the flavor profile. It is widely used for chill haze removal in whiskies and polishing filtration in wines.

3. Pharmaceuticals & Cosmetics

The enclosed nature of the housing makes it ideal for sanitary applications where operator exposure to the product must be minimized. Applications include syrup filtration, cologne polishing, and large volume parenterals.

Comparison: Lenticular vs. Plate & Frame

Many facilities consider upgrading from plate and frame presses to lenticular housings. Here is why the switch is beneficial:

Why Choose Purecowater?

As a distributor for leading filtration brands, Purecowater ensures you get the exact specifications required for your process. Whether you need the double O-ring seal for critical bypass prevention or a standard flat gasket model, we can supply the housings and the media modules to fit your needs.

If you are experiencing issues with premature clogging, haze, or difficult change-outs, the ErtelAlsop Pak® system is a proven solution.