What is a Filter Cartridge? Structure, Types & Applications

A filter cartridge is a key component in filtration systems, used to remove dust, particles, microorganisms, and chemical contaminants from air, water, or other fluids. In this guide, you'll learn what a filter cartridge is, its structure, various types of filter cartridges, and how they are used across industries.

1. What is a Filter Cartridge?

A filter cartridge is a replaceable or reusable element inside a filtration system that captures and holds contaminants. It is widely used in air filtration, water treatment, and industrial applications to ensure clean output by removing impurities from fluids or gases.

2. Structure of a Filter Cartridge

A typical filter cartridge structure includes:

• Filtration media: The main layer that traps particles. Common materials are polypropylene (PP), pleated paper, activated carbon, stainless steel mesh, or fiberglass.

• Support core: Maintains cartridge integrity under pressure and flow.

• Protective outer layer (optional): Provides durability and additional protection to the filtration media.

Each part plays a vital role in maintaining filtration efficiency and lifespan.

3. Types of Filter Cartridges

Filter cartridges vary by application and material:

3.1. By Application

• Air filter cartridges: Used in HVAC systems, cleanrooms, and biosafety cabinets.

• Water filter cartridges: Applied in residential, RO systems, and industrial water treatment.

• Chemical filter cartridges: Used for filtering solvents, acids, and other industrial chemicals.

3.2. By Material

• Polypropylene (PP) cartridges: Ideal for sediment removal, disposable, cost-effective.

• Activated carbon filter cartridges: Eliminate odors, chlorine, and organic compounds.

• String wound cartridges: Handle high temperatures and pressure; suited for liquid filtration.

• Pleated cartridges: Offer large surface area for higher dirt holding capacity.

• Stainless steel cartridges: Durable and reusable, suitable for high-temperature and corrosive environments.

4. Applications of Filter Cartridges

Filter cartridges are essential across various sectors:

• Healthcare & Pharmaceuticals: Used in cleanrooms and sterile environments to filter air and water.

• Food & Beverage: Ensure hygiene and product purity by removing contaminants.

• Electronics & Semiconductor: Require ultra-clean filtration systems for production.

• Paint & Chemical Industry: Filter solvents, inks, and harsh chemicals effectively.

• HVAC & Dust Control: Maintain air quality in commercial and industrial spaces.

Whether in a cleanroom filter system or an industrial air purification setup, filter cartridges play a critical role in achieving clean and safe environments.

5. Frequently Asked Questions (FAQ)

How often should I replace a filter cartridge?

Typically every 3 to 6 months depending on usage, flow rate, and contaminant levels.

Are filter cartridges reusable?

Some are, like stainless steel filter cartridges. Others, such as PP and carbon filters, are single-use.

How do I choose the right filter cartridge?

Define your filtration needs—type of contaminant, fluid or gas, required efficiency, temperature, and pressure tolerance.

Where to buy high-quality filter cartridges?

Choose trusted suppliers like BACH LONG, specialists in cleanroom filtration systems and industrial filtration solutions.

6. Contact Information

BACH LONG Co., Ltd. – Manufacturing, Trading & Service
📍 Address: 75 Nguyen Hong Street, Ward 1, Go Vap District, Ho Chi Minh City, Vietnam
📞 Hotline: +84 931 435 454
📧 Email: sales@congnghelockhi.vn
🌐 Website: www.congnghelockhi.vn