Industrial filtration is the separation of produced products from fragments, residues and other wastes of production materials. Depth filter elements come in a variety of sizes and shapes to meet different industrial filtration needs.

Industrial filtration

Depth filters are crucial in the chemical, pre-filtration, oil and gas, food and beverage industries where high precision and standards are required.

If you are looking for an effective way to remove contaminants from fluids in industrial filtration systems, depth filter cartridges are an excellent choice. In this article, we’ll give an overview of depth filter cartridges.

What are the depth filter cartridges?

Depth filter elements are an important part of the filtration process in many industries, including food and beverage, pharmaceutical, and chemical. Filter elements are often used to replace or supplement housing filters. Depth filter cartridges are made of porous materials, such as paper, cloth, or fibers, which allow liquid to pass through while trapping particles.

Depth filters are designed to remove contaminants from fluids by providing a large filtration surface area. The filter cartridge is placed in the filter housing to remove contaminants from the fluid. The particles are trapped in the pores of the filter element and the filtrate is collected on the other side. When the filter element is full of particles, the filter element must be replaced.

Types of depth filter cartridges

As a professional water treatment expert, Brother Filtration has many years of experience in filtration. We are able to offer different water solutions as your need and manufacture three types of depth filter cartridges, namely melt-blown cartridges, string wound cartridges, and activated carbon cartridges.

At Brother Filtration you can find customizable melt-blown cartridges, string wounds with more filter media, and carbon-pleated filter cartridges. All of these are designed to help you get cleaner, purer fluids and keep the filtration process safer and more stable.

Here is a quick overview of some of our common types of the depth filter cartridge

ProClean Granule Activated Carbon Filter
ProClean Glass Fiber String Wound Cartridge
PP String Wound Filter Cartridge
ProClean Cotton String Wound Cartridge
Melt Blown Filter Cartridge
ProClean Carbon Block Filter

What’s the difference between depth filtration and surface filtration?

Generally speaking, depth filtration is to the use of thicker media or multiple layers of media to form a tortuous path to retain particles. Whereas surface filtration is concerned with the majority of particles being retained on the surface itself.

What is depth filtration?

Deep filtration is an effective way to block large particles on the surface and finer particles in the inner layer. Multiple layers of zigzag channels are formed to create this effect. Made from carefully selected materials such as polypropylene, cotton, and fiberglass, these filters physically trap particles and prevent them from entering the final filtered liquid.

What is surface filtration?

Surface filtration is most effective when the medium’s thickness is similar in size to the particles it’s trying to extract. In this case, the particles are trapped on the surface of the filter. Surface filtration means that most of the particles remain on the surface of the medium, forming a layer of material that improves the efficiency or fineness of particle retention.

Depth filtration vs surface filtration

The main difference between the two is that with surface filtration, the particles are mostly retained on the surface of the media, while with depth filtration, the particles are either in thicker media or take a tortuous path through multiple layers of media.

Advantages of the filter cartridges

Depth filter elements work well at filtering a wide range of particle sizes. Depth filters can generally remove and hold more sludge without loss of pressure than surface filters.

It is generally seen as a wound, spun, or melt-blown filter element. Depth filters trap larger particles while trapping smaller particles below the surface down to the center core.

Advantages of the filter cartridges

Besides, depth elements have the advantage of thickness and depth, allowing the filter to capture more material. These cartridges are also easy to replace and are disposable.

How to choose the right depth filter cartridge for your needs?

The choice of filtration product depends on your plan and usage. Depth filtration will be necessary if your ingredients have a lot of debris and require heavy filtration. Instead, opt for slightly less expensive options such as manual cleaning or sand filters. Again, consider whether depth filtering is right for your application.

depth filter cartridge

When selecting cartridges and water filters, consider the ideal flow rate and filter size required for water treatment. Depth filter elements can be used in many industries, such as process filtration, filtration of corrosive liquids, and high filtration efficiency. Correspondingly, depth filtration is a little more expensive than surface filtration but lasts longer.


In conclusion, depth filters are an efficient and economical method of removing liquid contaminants. They are commonly used in industries such as food and beverage, pharmaceutical and chemical.

With many years of filtration experience, Brother Filtration specializes in the design, engineering, and production of filters and filter vessels, and provides liquid filtration solutions. We can also produce customized products according to customers’ needs. Feel free to contact us for more information about filtration and products.

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