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Custom HEPA Filters Solutions, Built to Your Specs
Customizable Solutions: Our EPA, HEPA, and ULPA filters adapt to your specific air quality needs, meeting the highest standards in industrial and public environments.
International Standards: Each filter complies with ISO 29463 and EN 1822, ensuring reliable and consistent performance.
No MOQ: Flexible order quantities to support businesses of all sizes, ensuring accessibility for every project.
Choose from various materials like ultrafine glass fiber filter paper, PTFE filter membranes, and nanofiber filter materials to meet specific filtration requirements.
Filters can be customized to your exact dimensions, ensuring a perfect fit for any installation space or equipment.
Select from a range of frame materials, including galvanized steel, stainless steel, aluminum alloy, and plastic, to suit different environmental and performance demands.
Basic Definitions of EPA,HEPA and ULPA Filters
What is EPA Filters ？
EPA stands for Efficient Particulate Air filter, a high-performance filter that bridges the gap between ordinary filters and HEPA filters. These filters are classified into three efficiency levels—E10, E11, and E12—based on international standards like ISO 29463 or EN 1822. Here’s how they perform:
E10: Minimum filtration efficiency of 85% for MPPS (most penetrating particle size) micron particles.
E11: Minimum filtration efficiency of 95% for MPPS micron particles.
E12: Minimum filtration efficiency of 99.5% for MPPS micron particles.These filters are ideal for environments requiring enhanced air quality without the stringent requirements of HEPA filters.
What is HEPA Filters ？
HEPA stands for High-Efficiency Particulate Air filter, a device specifically designed to remove tiny particles from the air with exceptional efficiency. International standards such as EN 1822 (Europe) and ISO 29463 (Global) define two main classes for HEPA filters:
H13: Filtration efficiency of ≥99.95% for MPPS micron particles (European standard).
H14: Filtration efficiency of ≥99.995% for MPPS micron particles (European standard).
In the U.S., HEPA filters follow standards like ASHRAE 52.2 or DOE, requiring a filtration efficiency of at least 99.97% for 0.3-micron particles.
HEPA filters are widely used in critical environments such as hospitals, laboratories, and cleanrooms, where air purity is crucial.
What Is MPPS?
MPPS stands for Most Penetrating Particle Size, which refers to the particle size at which a filter has the lowest filtration efficiency. For glass fiber filters, MPPS typically ranges between 0.12 μm and 0.25 μm. For membrane materials, the MPPS value is generally smaller than 0.1 μm, with common PTFE filter materials having an MPPS of approximately 0.07 μm.
This parameter is critical for understanding a filter’s performance, as it ensures that even the most challenging particles to capture are addressed effectively.
| E Group Filters (3 Levels) | H Group Filters (2 Levels) | U Group Filters (3 Levels) |
|---|---|---|
| E10 | H13 | U15 |
| E11 | H14 | U16 |
| E12 | * | U17 |
ClearFilter’s EPA, HEPA, and ULPA Filters Meet or Exceed Standards
This table simplifies the selection process for air filters by clearly comparing the efficiency levels and classifications of EPA, HEPA, and ULPA filters based on international standards (EN1822:2009, ISO29463:2011, and GB/T13554-2020). At ClearFilter, we specialize in providing high-performance filters that meet these exacting standards, ensuring reliability and precision for industrial, medical, and cleanroom applications.
| Category | EN1822:2009 (MPPS Efficiency) | ISO29463:2011 (MPPS Efficiency) | GB/T13554-2020 (0.3 μm) | |||
|---|---|---|---|---|---|---|
| Grade | Efficiency Value | Grade | Efficiency Value | Grade | Efficiency Value | |
| EPA Filters (or sub-HEPA) | E10 | Total Efficiency ≥ 85% | ISO 15E | Total Efficiency ≥ 95% | * | * |
| EPA (or sub-HEPA) | E11 | Total Efficiency ≥ 95% | ISO 20E | Total Efficiency ≥ 99% | * | * |
| EPA (or sub-HEPA) | E12 | Total Efficiency ≥ 99.5% | ISO 25E | Total Efficiency ≥ 99.5% | * | * |
| EPA (or sub-HEPA) | * | * | ISO 30E | Total Efficiency ≥ 99.9% | * | * |
| HEPA Filters | H13 | Total Efficiency ≥ 99.95%, Local Efficiency ≥ 99.75% | ISO 40H | Total Efficiency ≥ 99.95%, Local Efficiency ≥ 99.75% | 35 | Total Efficiency ≥ 99.95% |
| HEPA Filters | H14 | Total Efficiency ≥ 99.995%, Local Efficiency ≥ 99.975% | ISO 45H | Total Efficiency ≥ 99.995%, Local Efficiency ≥ 99.975% | 40 | Total Efficiency ≥ 99.99% |
| HEPA Filters | * | * | * | * | 45 | Total Efficiency ≥ 99.995% |
| ULPA Filters | U15 | Total Efficiency ≥ 99.9995%, Local Efficiency ≥ 99.9975% | ISO 50U | Total Efficiency ≥ 99.999%, Local Efficiency ≥ 99.995% | 50 | Total Efficiency ≥ 99.999% |
| ULPA Filters | U16 | Total Efficiency ≥ 99.99995%, Local Efficiency ≥ 99.99975% | ISO 55U | Total Efficiency ≥ 99.9995%, Local Efficiency ≥ 99.9975% | 55 | Total Efficiency ≥ 99.9995% |
| ULPA Filters | U17 | Total Efficiency ≥ 99.999995%, Local Efficiency ≥ 99.9999% | ISO 60U | Total Efficiency ≥ 99.9999%, Local Efficiency ≥ 99.9995% | 60 | Total Efficiency ≥ 99.9999% |
| ULPA Filters | * | * | ISO 65U | * | 65 | Total Efficiency ≥ 99.99995% |
| ULPA Filters | * | * | ISO 70U | * | 70 | Total Efficiency ≥ 99.99999% |
| ULPA Filters | * | * | ISO 75U | * | 75 | Total Efficiency ≥ 99.999995% |
Our High-Performance HEPA Filter Series
ClearFilter’s HEPA filter series offers a wide range of high-performance solutions designed to meet the demands of various industries, including aerospace, electronics, pharmaceuticals, food processing, and nuclear power. Each filter is crafted with advanced materials and cutting-edge technology to ensure high efficiency, low resistance, and long-lasting performance.
VAF Series-High Temperature High Efficiency Filter
- High Efficiency and Large Airflow
The V-shaped structure design increases the filtration area, enhancing efficiency while maintaining high airflow.
- High-Temperature Resistant Materials
Constructed with heat-resistant glass fiber filter media and durable frame materials to ensure stable performance in high-temperature environments.
- Long Lifespan with Low Resistance
Optimized design reduces energy consumption, extends service life, and minimizes operational resistance.
- Versatility Across Various Environments
Suitable for diverse high-temperature applications, including aerospace, electronics, pharmaceuticals, and nuclear power, withstanding temperatures up to 250°C.
VAF Series
- High Dust-Holding Capacity and Low Resistance
The filter adopts a separatorless design with a compact V-shaped structure, increasing the amount of filter media. This ensures high airflow while reducing pressure drop, energy consumption, and operating costs.
- High Airflow and Efficiency
With a large filtration area and dust-holding capacity, the filter delivers high airflow and occupies minimal space. Filtration efficiency exceeds 99.9%, making it suitable for high-humidity and variable air volume systems.
- Durable Structure and Long Lifespan
Built with a robust construction, the filter maintains excellent performance even under turbulent conditions. The bi-directional filter media design extends its service life, reducing replacement and maintenance costs, and saving operational expenses.
- Customization and Advanced Sealing Technology
Filters can be customized to meet specific user requirements. Each unit undergoes scanning tests before leaving the factory to ensure top quality. The seamless sealing technology guarantees no leakage during installation and use.
SAF Series
- High-Temperature Resistant Materials
Made with ultrafine glass fiber filter paper and a stainless steel frame, ensuring stability and durability in high-temperature environments.
- High Efficiency with Low Resistance
Designed for low operational resistance, improving energy efficiency and reducing energy consumption.
- Compact Structure
Precision-engineered with a small, space-saving design, making it easy to install and maintain.
- Reliable Performance in Challenging Environments
Built to withstand harsh operating conditions, providing consistent and dependable filtration performance over time.
SAF Series
- Stable Structure
Built with aluminum separators and optional frame materials, including galvanized steel, stainless steel, and aluminum alloy, ensuring durability and reliability.
- High Efficiency with Low Resistance
Features a separator design for high filtration efficiency, low resistance, and a large dust-holding capacity, optimizing performance and operational costs.
- Adaptable to Variable Air Volume Systems
Designed to perform consistently in variable air volume (VAV) systems, maintaining efficiency under changing airflow conditions.
- Customizable Frame Options
Offers flexibility to choose frame materials and designs based on specific application requirements, ensuring compatibility and enhanced performance.
PAF Series
- Versatile Applications
Widely used in clean environments across industries such as electronics, pharmaceuticals, and food processing, suitable for large-scale cleanroom setups.
- Aesthetic and Stable Performance
Made with ultrafine glass fiber media and hot-melt adhesive spacers, paired with various frame materials, ensuring a sleek appearance and reliable performance.
- Compact Design
Lightweight and small in size, making it easy to install and handle.
- Low Resistance Operation
The separatorless design reduces airflow resistance and improves airflow efficiency. Compared to traditional separator filters, it offers significantly lower air resistance.
- Increased Filtration Area
Special folding techniques create evenly distributed pleats in the filter media, expanding the filtration area and enhancing filtration efficiency.
- Eco-Friendly Materials
Constructed with environmentally friendly materials, meeting sustainability requirements.
ClearFilter’s Expertise in Filtration Materials and Technology
At ClearFilter, we stand apart from other filter manufacturers with our comprehensive filtration material production expertise.
We operate a 350mm-wide filtration material pilot line and a 600mm-wide filter paper production line, capable of producing various wet-laid filtration materials, including glass fibers and polymer fibers.
In addition, our advanced material modification technologies enable us to enhance the surface properties of filtration media, significantly improving their performance and efficiency.
ClearFilter’s innovative approach ensures superior filtration solutions tailored to meet the highest industry standards.
| Filter Material Type | Fiber Diameter | Material Properties | Main Filtration Mechanisms | Efficiency Applications |
|---|---|---|---|---|
| Ultrafine Glass Fiber Media | 0.5~2 μm | Complex multi-layer structure between fibers, providing high dust-holding capacity and high filtration efficiency. Heat-resistant and flame-retardant properties. | Inertial impact, interception, diffusion effect, partial electrostatic adsorption | EPA, HEPA, ULPA |
| Polymer Fiber Media | 1~10 μm (typically) | Made of polymers like polypropylene (PP) and polyester (PET), offering good flexibility and suitability for various processing methods. Moisture-resistant, lightweight, easy to process and transport. Lower resistance than glass fiber. | Inertial impact, interception, electrostatic adsorption | EPA, HEPA |
| Nanofiber Media | 10~100 nm | Produced using electrospinning technology. High surface area, high porosity, excellent for capturing ultrafine particles (e.g., PM0.1, viruses). High efficiency (close to 100%), low resistance, energy-efficient, but relatively expensive. | Diffusion, interception, inertial impact | EPA, HEPA |
| High-Performance Membrane Media | Very small pore size | Includes materials like PTFE membranes with ultra-fine microstructure, capable of capturing submicron particles. Excellent chemical resistance, high filtration efficiency, suitable for harsh environments. | Mechanical interception, diffusion | EPA, HEPA, ULPA |
| Composite Media | / | Combination of two or more materials, such as glass fiber + activated carbon, or nanofibers, offering material-specific advantages. | Combined mechanisms (depends on material properties) | EPA, HEPA |
| Electrostatically Enhanced Media | / | Modified polymer fibers with electrostatic layers to improve filtration performance. | Electrostatic adsorption, interception, inertial impact | EPA, HEPA |
Why Choose ClearFilter ?
We are committed to delivering air filtration solutions that exceed expectations. With innovation and craftsmanship, we create safer, more stable, and highly efficient environments for your business.
Every high-efficiency filter undergoes comprehensive leakage testing and meets international standards such as ISO 29463 and EN 1822.
Tailored to meet specific requirements across diverse industries and applications, helping clients succeed in their unique environments.
Optimized internal filter structures achieve the perfect balance between high filtration efficiency and low resistance.
With core technologies mastered in-house, we maintain complete control from raw materials to finished products, ensuring exceptional performance.
HEPA Filter Testing
The Backbone of Reliable Filtration Solutions
Our facility is built to deliver customized, efficient, and reliable filtration solutions, helping you tackle challenges in industries like electronics, pharmaceuticals, and cleanrooms.
Production process in our factory
Our facility is built to deliver customized, efficient, and reliable filtration solutions, helping you tackle challenges in industries like electronics, pharmaceuticals, and cleanrooms.
HEPA Filter FAQs
Typically, HEPA filters last 6 months to 2 years, depending on the environment and usage.
Clogged filters increase pressure drop, energy consumption, and operational costs.
For homes, use H13 (99.95%); for cleanrooms or medical use, choose H14 (99.995%) or higher.
Prices depend on filter media, efficiency grade, production techniques, and certifications.
Replace it if resistance rises, airflow decreases, or the filter exceeds its lifespan.
Install in the airflow direction, ensure a tight seal, and work in a clean environment.
Most HEPA filters are single-use; some PTFE filters may allow washing.
Use pre-filters, maintain proper airflow, and select appropriate efficiency levels.
HEPA filters trap airborne viruses and bacteria but do not kill them.
High-quality filters do not, but old filters can grow mold or release odors.
Store in a dry, clean place with intact packaging to avoid damage.
Noise may indicate clogged filters, loose installation, or excessive airflow speed.
