ErtelAlsop The First Name in Liquid Filtration Pak® Lenticular Filters From Development to Production Scale, There is a Product to Meet the Application ErtelAlsop developed the lenticular depth filter cartridge format in 1942 to meet a particular customer need – an enclosed system design with fast changeout, neither requirement being possible with a filter press. Continuous improvement in product design leads to today’s Pak® filter. An important aspect of many of our products is the enhanced Zeta potential imparted to the filter media by a wet strength resin. This charge modification results in excellent haze removal capability separate from the micron rating of the filter. Depth filtration is often best utilized when high solids need to be removed to protect downstream filters and equipment. Media Types Micro-Media® XL – The XL series incorporates Celpure® DE for greatly enhanced filter performance. In addition, its high purity, low extractables and rigorous QC make it the leading product for depth filtration in critical applications such as pharmaceuticals and biologicals. The higher percentage of SiO2 and increased permeability as compared to conventional diatomaceous earth (DE) contribute to its purity and usability as a filter for products that must meet the highest standards. Micro-Media® – High-performance filter media containing cellulose, filter aid, and a wet strength resin. Two types of filter aid are available in this series, either perlite or diamtomaceous earth (DE). Perlite is derived from volcanic ash and has a consistent shape that results in a denser filter media. Diatomaceous earth is derived from marine diatoms. Its varied shapes offer improved efficiency for the removal of fines and hazes. Micro-Clear™ – Activated Carbon impregnated media that utilizes the filtration capacity of cellulose (some grades are available with DE or perlite), while providing the chemical removal capability of carbon. Certain organics and colors that are not desired in the final product can be removed by this filter combination. Some halogenated compounds are also removed. Avoid problems associated with loose powder. Alpha-Media™ – Composed of 100% cellulose, it contains no resins, binders, filter aids, or synthetics. Useful when simple filtration is all that is needed. Zeta-Dri Pak™ – A filter version designed to remove free and emulsified water from oil based liquids. A 16-cell MicroMedia version can hold up to 148 ounces of water. The Zeta-Dri option is available with any grade of Micro-Media® for combined depth filtration and water removal. Aqua-Kv Pak™ – This media formulation is specifically designed to remove water from transformer and turbine lube oils. Available with Alpha-Media™, it provides particulate removal and water retention. When fully saturated, the filter demonstrates mechanical shutoff for complete assurance that water will not reenter the system. Cartridge Styles ErtelAlsop manufactures a wide range of lenticular cartridge configurations to meet your needs. The Disc-Pak®, Zeta-Pak®, and Bio-Pak® cartridges can be made in two diameters, 12” and 16”, with a varied number of cells and center core designs. Surface areas range from 3ft2 to 40ft2. Center cores are available in two styles, the flat gasket compression seal type, and the double O-ring type. The flat gasket style has either stainless steel straps or an innovative all polypropylene structure for improved cartridge integrity. The double O-ring style is for critical applications where the prevention of filter bypass is crucial. ErtelAlsop • PO Box 3358 • Kingston • NY • 12402 • ErtelAlsop.com • 845.331.4552 • Fax 845.339.1063 Filter Media Many filter types are available in the market and each serves a particular need. Depth filters are used in a wide variety of applications when liquid clarification, product cleanliness and cost effective removal of particulates are primary concerns. Commonly, depth filters also serve to protect downstream membrane filters and other equipment.

ErtelAlsop The First Name in Liquid Filtration Applications Materials of Construction Chemical Industry For the filtration of silicones, coatings, stabilizers, chemical intermediates and the like. Oils and Lubricants – For particulate removal and water removal to improve product cleanliness and life. Power Industry Especially for the removal of particulates and water contamination from turbine lube and transformer insulating oil. Materials of construction are kept to a minimum to enhance chemical compatibility and product safety. As described elsewhere, the filters contain media (cellulose, DE...

ErtelAlsop The First Name in Liquid Filtration 2. Core 1. Cartridge Diameter 3. Cartridge Height 6. Number of Cells 5. Media Grade 1 12 Diameter 2 PO 4. Gasket Material 3 Y 4 3 5 6 M-50 16 XX XX 16=16 i n c h Height Gasket Grade # of Cells Features SF=Strapped Flat Gasket End Cap W= 6-3/8”Flat Gasket Double O-ring 2=Neoprene M -50 (Ex ampl e) 3-18 PO=Polypropylene Core Double O-Ring End Cap Double O-Ring 12=12 i n c h Core 4=EPDM X=7-9/16” Flat Gasket 8-9/16” Double O-Ring 5=Buna-N PF=Polypropylene Core Flat Gasket End Cap PS=Polypropylene Core Double O-Ring w/SS Ring for Steaming 3=Viton ZD...

The Format to Fit Your Needs All ErtelAlsop media formulations can be manufactured in formats to fit your application. Filter sheets, discs and Pak® Lenticular Cartridges are all available to provide you with product to optimize your application. ErtelAlsop also manufactures a complete line of filter machinery, from Small Batch and Pilot Scale Lab Filters to Plate and Frame Filters, Sealed Disc Filters and Pak® Lenticular Cartridge Housings. For over 80 years, ErtelAlsop has been proactively solving the depth filtration problems of industry. We originated and patented the Pak® Lenticular Cartridge...