Lenticular Filter

For critical pharmaceutical and biotech applications

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Lenticular filtration is a popular alternative to sheet filtration that uses similar media for similar applications but boasts many advantages. Like sheet filtration, it uses nominally rated  filter media  with a range of porosities and can be used at a variety of points in the filtration/stabilization process. However, instead of sheets, lenticular filtration uses modules that stack inside a contained housing.

The housing and media design give lenticular filtration several advantages over sheet filtration, and in general, makes it an excellent choice of filtration system:

We provide a comprehensive range of lenticular filters and lenticular filter modules designed for use in the filtration of soft drinks, sugar syrup, beer and wines, as well as in the pharmaceutical and general chemical industries. Our efficient and economical lenticular depth filter media are created from robust, stable, non-compressible, stacked lenticular disc modules.

This robust design means that Sanitek’s range has high mechanical stability when handling large solid particles. With the ACC Lenticular Filter and DIA Lenticular Filter, you can expect exceptional performance for critical process filtration.

ACC Lenticular Filters incorporate immobilized activated carbon and cellulose fibers. This makes them ideal for effectively adsorbing colors, odors, or other soluble contaminants.

DIA Lenticular Filters feature pharmaceutical-grade depth filter media, composed of cellulose, wet-strength resin, diatomite, and/or perlite. These cartridges are tailored for critical pharmaceutical and biotech applications where water quality is paramount.

Controlled Filtration

Controlled Filtration





FDA food contact compliant

FDA food contact compliant


Features of Lenticular Filters

Conventional depth filtration methods such as flat filter sheets often entail labor-intensive processes, resulting in significant hold-up volumes and reduced yields.

Sanitek’s lenticular modules address these drawbacks by offering adaptable and economical filtration solutions, including:

  • Easy to use and maintain, with quick and easy module change-outs.
  • Reusable and regenerable media, promoting sustainability.
  • Minimal drip loss and low dissolved oxygen, ensuring high product quality.
  • Scalability to accommodate varying production needs.
  • Compatibility with bottling lines for seamless integration.
  • Longer filtration runs with improved filtrate quality, enhancing efficiency.
  • No drip losses and lower dead volumes for increased yield.
  • Increased process safety and reduced handling for improved operational security.
  • High-performance depth media reliably removes contaminants.
  • Pre-assembled units for easy installation and change-out, minimizing operator costs.

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Sanitek has the answers to common questions about capsule filter and filter cartridges in critical process filtration.

Common Questions About Process Filtration

Common Questions about SanitekWhat is a Lenticular Filter?

A lenticular filter, also known as a stacked disc filter, is a specialized type of filter used for liquid filtration. This type of filter is composed of stacked discs made of a disposable filter media, and is designed to remove impurities and particles from liquids such as beverages, pharmaceuticals, and chemicals. The discs are usually composed of cellulose, nylon, or other similar materials that trap the impurities while allowing the clean liquid to pass through.

Common Questions about SanitekWhy are they called "lenticular" filters?

The term “lenticular” refers to the shape of the filter modules. A “lenticle” is something shaped like a lens. Lenticular filter modules resemble a stack of lenses when viewed closely. Each of these lenses is referred to as a lenticular cell. Therefore, they are called lenticular filters due to their lens-like shape. Below is an image of a 16-cell lenticular module.

Common Questions about SanitekHow does a lenticular filter work?

The lenticular filter works by passing the liquid through a stack of filtration discs, which contain the filter media. Multiple layers of stacked filtration discs increase the filter’s surface area to enable a more efficient filtration process than traditional filters can offer. As the liquid flows through the discs, the filter media captures and retains the impurities, allowing only clean liquid to pass through. The flow of the liquid is usually facilitated by ambient pressure or a pump system.

Common Questions about SanitekWhat are the benefits of using a lenticular filter?

Lenticular filters offer several benefits, including high filtration efficiency, easy installation, and low maintenance. They are capable of removing a wide range of particles and contaminants, ensuring the purity and quality of the filtered liquid. Lenticular filters also provide high flow rates and are well suited for critical applications where purity standards are strict. They are often preferred over other filtration methods, such as plate and frame filters or cartridge filters.

Common Questions about SanitekWhat industries commonly use lenticular filters?

Lenticular filters are commonly used in industries such as food and beverage, pharmaceuticals, biotechnology, and chemical processing. They are particularly effective in applications that require high-quality filtration, such as clarifying liquids or removing particulates before further processing. Lenticular filters are also a popular choice for filtration of enzymes, proteins, and other biomolecules in biopharmaceutical processing.

Common Questions about SanitekHow do lenticular filters and modules guard against bypass effects?

Lenticular filters and modules ensure protection against bypass effects through several key features:

Precise Seals: Utilizing polypropylene or polyamide seals with edge moulding ensures a tight seal, preventing bypass of contaminants.

Constant Final Pressing: The final pressing is maintained consistently, enhancing the integrity of the filtration process and minimizing the risk of bypass.

Stable Construction: An optimized three-part, stainless-steel segment sleeve stabilizes the unit, even under sterilization conditions, further reducing the possibility of bypass.

Double O-Ring Adapter: Optionally available, the double O-ring adapter enhances performance by providing additional sealing.

Internal Drainage Plate: Incorporating an internal drainage plate facilitates an optimal flow path within the cell, ensuring thorough filtration without bypass.

Consistent Cell Distance: Maintaining a constant cell distance ensures the full utilization of the entire filter surface, maximizing filtration efficiency and minimizing the risk of bypass.

Common Questions about SanitekWhat are the products included in our lenticular filters and modules product group?

Our lenticular filters and modules product group encompasses a variety of filtration solutions tailored to specific needs:

Depth filter sheets: These sheets are designed with low endotoxin content, making them ideal for pharmaceutical applications.

Stacked disc cartridges: These cartridges are equipped with supporting lenticular filters, suitable for cake filtration within the pharmaceutical industry.

Lenticular filters with activated carbon: These filters integrate activated carbon for enhanced filtration capabilities.

Depth filter sheets for standard applications: These sheets are versatile and suitable for a wide range of standard filtration needs.

Depth filters for highly viscous liquids: Specifically designed for filtering highly viscous liquids, these filters ensure efficient filtration performance.

Stacked disc cartridges with support sheets: These cartridges are equipped with support sheets, facilitating cake filtration processes effectively.

Common Questions about SanitekWhat makes lenticular filters convenient to set up and dismantle?

Lenticular filters boast easy setup and teardown processes. Their design facilitates quick assembly and disassembly, streamlining maintenance tasks.

Common Questions about SanitekHow easy is it to maintain lenticular filters?

Maintenance of lenticular filters is minimal, requiring replacement of only three main components: a base silicone or Viton gasket, 1.5” gaskets for the tri-clover fittings, and occasionally, the plastic part of the hold-down device. This simplicity contributes to efficient and hassle-free upkeep of the filtration system.

Common Questions about SanitekHow does this structural difference impact the design of filtration systems?

Since lenticular modules provide primary support for the filter media, the stainless structure in lenticular systems primarily serves as plumbing. Consequently, lenticular housings typically have fewer parts compared to plate & frame setups, with much of the infrastructure integrated within the lenticular modules themselves.

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