Box-type chemical filter for air handling unit (MAU)

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Box-type chemical filter for air handling unit (MAU)

DSX Box-Type Chemical Filter: Product Brief

The DSX Box-Type Chemical Filter is a compact and efficient solution for air purification in industrial and commercial environments. It effectively removes harmful gases and VOCs (Volatile Organic Compounds) to ensure clean and safe air quality. The filter's compact design allows for easy installation and integration into various systems, making it a convenient choice for a wide range of applications. With its high-performance capabilities, the DSX Box-Type Chemical Filter is a reliable and dependable solution for improving indoor air quality.

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Box-type chemical filter Chemical Filters Chemical Filter manufacturer Chemical Filter-remove Acids Chemical Filter-remove Amines Chemical Filter-remove Ammonia Activated carbon filter for VOCs chemicals odors air filters Chemical Filter for Semiconductor Chemical Filter-remove Ozone

Product introduction

Product Specifications

Workshop Introduction

FAQs

DSX Box-Type Chemical Filter for Make-Up Air Units (MAU)

Reliable AMC Control for Critical HVAC Systems

Product Overview

The DSX Box-Type Chemical Filter is specifically engineered for installation in Make-Up Air Units (MAUs) and centralized air handling systems. It effectively removes acidic gases, alkaline compounds, condensable VOCs, and dopants – safeguarding sensitive manufacturing processes (e.g., semiconductor, pharmaceutical, and food processing) while maintaining a healthy indoor environment.

Manufactured with robust materials and precision media formulation, this filter delivers high adsorption capacity, low pressure drop, and extended service life, making it a cost‑effective choice for continuous clean air supply.

Technical Specifications

Parameter	Details
Frame Material	Galvanized steel or SS304 stainless steel, reinforced with pull strips for structural rigidity
Gasket Material	Chemical‑free EPDM (no outgassing)
Sealant	Chemical‑free PU (polyurethane) – ensures zero contamination
Standard Sizes	Available in industry‑standard dimensions; custom sizes offered upon request
Media Type	Tailored blended adsorbents (activated carbon, ion‑exchange resins, permanganate‑based, etc.) depending on target pollutants

Key Advantages

High Adsorption Capacity – Reduces replacement frequency, lowering total cost of ownership (TCO).
Low Operating Cost – Optimized media density minimizes airflow resistance, saving fan energy.
Durable Construction – Corrosion‑resistant frame and sealing materials ensure long‑term reliability in harsh environments.
Customizable Media – Formulated to match your specific contaminant profile (acids, bases, condensables, dopants).
Easy Maintenance – Slide‑in design fits standard MAU filter racks; no special tools required.
Environmentally Friendly – All materials are RoHS‑compliant and free from hazardous volatiles.
Compliance Ready – Meets ISO 14644 and SEMI standards for cleanroom air filtration.

Targeted Pollutant Removal

Our filters are designed to tackle four major AMC categories commonly found in industrial outdoor air:

Category	Description	Typical Examples
Acids	Corrosive gases acting as electron acceptors	HF, HCl, H₂SO₄, HNO₃
Bases	Corrosive gases acting as electron donors	NH₃, NMP, amines
Condensables	High‑boiling‑point compounds that deposit on wafers	Siloxanes, plasticizers, organic solvents
Dopants	Impurities that alter semiconductor electrical properties	Boron, phosphorus compounds

By targeting these four groups, the DSX box‑type filter ensures stable process yields and operator safety.

Why Choose DSX?

20+ Years of Expertise – Our chemical filtration team has deep experience in media blending, manufacturing, and real‑world application engineering.
Data‑Driven Customization – We analyze your site’s air quality data and design a filter solution tailored to your unique pollutant mix and airflow conditions.
Continuous Innovation – We stay ahead of industry trends, constantly improving media formulations and production processes for maximum efficiency.
Full Technical Support – From selection to installation and maintenance, our engineers provide ongoing assistance.

Applications

Semiconductor and electronics cleanrooms
Pharmaceutical and biotech production areas
Food and beverage processing plants
Museum and archive storage (corrosion control)
Any MAU/HVAC system requiring chemical filtration

Get a Customized Solution

Contact our technical team today with your MAU specifications and contaminant data. We will deliver a custom‑engineered filter that balances performance, lifetime, and budget – backed by our satisfaction guarantee.

DSX offer customized solutions tailored to the specific needs of our customers based on the results of the environmental testing in their facilities.

Semiconductor Clean Room Solutions

Dynamic Adsorption of DSX Filters for Various Gases

Characteristics of different materials

853(2750) filter material - to remove volatile organic compounds, sulfur dioxide, nitrogen dioxide, ozone, sulfur oxide. This filter material is the most effective for removing volatile organic compounds, and it also has a considerable capacity for common outdoor pollutants such as sulfur dioxide, nitrogen dioxide, ozone, sulfur oxide. This filter material is also very effective in removing boron.

875(2751) filter material - used to remove acids such as hydrogen fluoride, hydrofluoric acid, and sulfuric acid. This filter material is also very effective in removing sulfur dioxide, nitrogen dioxide, ozone, and hydrogen sulfide (better filtration effect than 853 filter material).

Both 147 and 875 media can also remove VOCs.However,the capacity (service life) is reducedto 1/2 as compared to 853 media.

Flow rate vs. Pressure Drop

Filter Type	Cell type	Prefilter type
Depth	11-1/2" or 5-7/8"	2" or 4"
Media	Pleated 863、147、875	Pleated 863、147、875
No. of Pleat	10-12 pleats/linear ft	10-12 pleats/linear ft

Frame Material:

5-7/8" & 11-1/2" use aluminum.galvanizedsteel,stainless steel.

2"&4"use paper,aluminum,galvanizedsteel,stainless.

Header Design:Single header,double header,box type.

Media Specification:

Media Tpye

VOC(TA)

853(2750)

BASE(AM

147(2752)

ACID(ABE)

875(2751)

Thickness

2.2mm

Basis Weight

600g/m2

Service Life

NH₃ Ammonia

Toluene

Hydrogen sulfide

Sulfur dioxide

-

75,000

60,000

92,000

67,000

41,000

9,000

10,000

-

57,000

34,000

139,000

Guide of Usage

Boron

Volatile Organic Compounds (VOC)

SO₂ Sulfur Dioxide

NO₂ Nitrogen Dioxide

Ozone

H₂S Hydrogen Sulfide

Commo outdoor pollutants

Paint odor

Tobaccosmoke odors

Food Aromas

Ammonia

Amines

NMP

Anima odor

Bathroom Smells

Acid

Volatile Organic Compounds (VOC)

HCl Hydrogen Chloride

HF Hydrogen Fluoride

H₂SO₄ Sulfuric Acid

SO₂ Sulfur Dioxide

NO₂ Nitrogen Dioxide

Ozone

H₂S Hydrogen Sulfide

Filter Performance Comparison

These results can be compared by determining the amount of gas,in parts per billion(ppb).adsorbed in the media over the time period measured and expressing the result inppb-hours.Good performance would be found when much of the gas is adsorbed overlong time periods.

Filter Performance Comparison (2)

Compare DSX chemical filters with other brands.

Pressure Drop of Competitive Pleated Filters

The pressure drop of DSX filter is lower than that of the filter from Company A.

In comparison with Company B's filter pressure loss, the DSX chemical filter has lower pressure loss.

Comparison of the lifespan of DSX chemical filter and other competing brand filters

Comparison of the adsorption capacity of DSX chemical filter and Company B's filter for hydrogen sulfide.The DSX chemical filter has better absorption capacity and efficiency compared to Company B's filter.

Comparison of the adsorption capacity of DSX chemical filter and the chemical filter of Company B on sulfur dioxide shows that the DSX filter has better absorption capacity and efficiency than Company B's filter.

DSX chemical filter 对二氧化硫吸收对比表

The DSX chemical filter has adsorption capacity for volatile organic compounds - toluene.（Increasing the thickness of the filter screen will also increase its adsorption capacity and efficiency.）

Dynamic Adsorption of DSX Filters for Various Gases

The DSX chemical filter has good efficiency for nitrogen dioxide, acetone, hydrogen chloride, and glutaraldehyde.

Product Specifications

	Product name	Box-type air conditioner chemical filter
	Frame material:	Galvanized sheet or stainless steel 304, reinforced with pull strips.
	Gaskets	Gaskets are made of non-chemically releasing EPDM material.
	Sealant	Sealant is made of non-chemically releasing PU material.

Features of DSX AMC chemical filter

1. High efficiency in removing chemical pollutants, with an initial efficiency of over 95%.	System Installation Diagram
2. High amount of activated carbon coating
3. Low air resistance
4. Long service life
5. Coated with hollow fiber melt, with activated carbon enclosed within.
6. The fine carbon of the coated material uses 60-80 CTC 30-60 mesh coconut shell activated carbon
7. Low dust production
8. No chemical release
9. Three types available for removing different pollutants: - MA-ABE: Removes acidic gas (ACID) molecule pollutants - MB-AM: Removes alkaline gas (BASE) molecule pollutants - MC-TA: Removes volatile organic solvent (VOC) molecule pollutants
10. Used for MAU with a carbon base weight of 800g/m², and for FFU with a carbon base weight of 600g/m²
11. The air conditioning unit is installed between the primary and medium efficiency filters, while the FFU is installed at the air inlet and inside the return air conditioning unit.

Product introduction

Airflow pressure loss diagram

DSX Chemical Filter Airflow pressure loss diagram

DSX box-type chemical filter parameters (customizable non-standard)

Dimensions	Handling air volume	Air resistance	Air speed M/S
WHD(mm)	(CMH/CFM)	(Pa)	Air speed M/S
592592292	3400/2000	80	2.5
287595292	1700/1000	80	2.5
610610292	3400/2000	80	2.5
305610292	1700/1000	80	2.5
490490292	2390/1400	80	2.5
490592292	2800/1650	80	2.5

Workshop Introduction

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FAQs

What is a Chemical Filter?

**In-depth Analysis of Chemical Filters**

**1. Filter Principles**

The main principle of chemical filters is to remove or convert harmful chemicals from the airflow using specific chemical reactions or physical adsorption. When air containing hazardous chemicals passes through the filter, these substances react with the active substances inside the filter or are adsorbed on the surface of the filter material, thus achieving purification.

**2. Materials and Construction**

Chemical filters have various constructions, but the core typically consists of filter materials, support structures, and casing. Filter materials, such as activated carbon, molecular sieves, and catalysts, are commonly used. Activated carbon is widely applied due to its high surface area and excellent adsorption properties. Support structures are used to hold the filter materials in place and ensure uniform airflow. The casing protects the internal structure and provides connection interfaces.

**3. Filtration Efficiency Analysis**

Filtration efficiency is a crucial indicator for evaluating the performance of chemical filters. It depends on the properties of the filter material, the composition and velocity of the gas, as well as environmental factors like temperature. By conducting laboratory tests, the filter's removal efficiency for specific chemicals can be determined, aiding in the selection of the appropriate filter model.

**4. Application Scenarios**

Chemical filters find widespread applications in industries such as chemical, pharmaceutical, electronics, food, as well as environments like laboratories and hospitals. For example, in chemical plants, chemical filters can remove toxic substances from exhaust gases, thus protecting the environment and workers' health. In laboratories, they filter out harmful gases produced during experiments to ensure safety.

**5. Usage Precautions**

When using chemical filters, several precautions should be taken. Firstly, choose the appropriate filter model and specifications based on actual needs. Secondly, regularly inspect the filter's condition to ensure it is in good working order. Lastly, when replacing filter materials, follow operating procedures to avoid secondary pollution to the environment.

**6. Safety Measures**

To ensure safe use, chemical filters are typically equipped with safety devices like explosion-proof and leak-proof mechanisms. Additionally, when operating filters, wear suitable personal protective equipment such as gas masks, gloves, etc. In case of leaks or other safety incidents, take immediate emergency measures and seek assistance from professionals.

**7. Environmental Impact Assessment**

The environmental impact of chemical filters primarily lies in their ability to treat exhaust gases and the handling of filter materials. High-quality filters can effectively reduce the emission of harmful substances in exhaust gases, thereby decreasing environmental impact. However, disposed filter materials may also become environmental pollutants. Hence, when selecting and using filters, consider their environmental impact throughout the entire lifecycle and implement appropriate disposal measures.

**8. Future Development Trends**

With increasing environmental awareness and technological advancements, the performance of chemical filters will continue to improve. In the future, chemical filters will focus more on efficiency, environmental-friendliness, and intelligence. Research and application of high-efficiency filter materials, development of intelligent control systems, and innovation in waste treatment technologies will be key directions for the development of chemical filters. Furthermore, with the implementation of new environmental policies and growing public environmental consciousness, the market demand for chemical filters will increase, expanding their application areas further.
What does a Chemical filter do?

Chemical filters are specialized filtering devices primarily used to remove harmful chemicals from gases, aiming to protect the environment and human health. Operating based on the principle of adsorption, when a liquid or gas containing harmful chemicals passes through the filter, the adsorbent or ion-exchange material inside the filter reacts with the harmful substances, capturing and immobilizing them within the filter, thus achieving purification.

Chemical filters find wide applications in the field of environmental protection and industrial production. In environmental protection, they are mainly employed for air purification by removing harmful substances and odors from waste gases, reducing pollution to the environment. In industrial production, for instance, in the fresh air treatment systems of the electronics industry, chemical filters effectively eliminate acidic and alkaline substances, safeguarding the safety of production equipment and the quality of products, while also reducing environmental pollution.

The primary role of chemical filters is to filter and purify harmful chemicals in gases to safeguard the environment, human health, and industrial production safety.
What are the difference type of chemical filters？

There are multiple types of chemical filters, each with its unique design and application. Here are some common types:

1. Packed Bed Chemical Filters: This is the most common type, available as either a cabinet-embedded or duct-connected filter. Packed bed filters consist of a pipe with a filter core filled with granular adsorbent material encased in a housing. Fluid (gas) passes through the pipe into the filter core, where pollutants are filtered out through the pores or surface of the material. Clean fluid then exits the filter core. The choice of filling material, such as honeycomb activated carbon boxes, varies based on the need to target acids, alkalis, organic gases, or odor removal.

2. V-Bank Pleated Chemical Filters: These filters use a pleated structure with non-woven fabric containing activated carbon and spaced V-shaped and half V-shaped screens inside.

3. Flat Plate Chemical Filters: These filters are the simplest form, with the adsorbent tightly packed into a cavity formed by a metal mesh and secured by a frame.

4. Cartridge Chemical Filters: Comprising end caps, baseplates, circular inner and outer nets, the cartridge filter body is made of galvanized or stainless steel. The carbon cartridge metal shell is reusable, with the installation frame made of cold-rolled steel plate spray-painted or stainless steel.

Additionally, there are other types of chemical filters such as granular filters, activated carbon filters, microfilters, pressure filters, gravity filters, bag filters, and membrane filters, each with specific applications for removing pollutants of various sizes and types.

Chemical filters come in diverse types, allowing for suitable selection based on specific requirements and applications.
Can I customize the Chemical filter instead of getting the regular model?

**Customizing Chemical Filters**. Just like HEPA filters, chemical filters can also be customized to effectively handle specific types of harmful gases and chemicals.

Firstly, understanding the types and concentrations of gases is crucial when customizing chemical filters. Typically, customers would engage a reputable third-party testing company to analyze the types and concentrations of gases present. Based on this data, we can customize the appropriate chemical filter media.

Secondly, taking into account the working environment and operational conditions, customized filters can be designed with adjustments such as size, shape, airflow, and pressure drop. This ensures that the filters not only fit your equipment but also perform optimally in real-world usage.

Moreover, consideration for the filter's lifespan and maintenance requirements can also be factored into the customization process. Through optimized design and material selection, the filter's lifespan can be extended, and maintenance and replacement processes simplified, saving you costs and time.

Beyond the basic filtration function, additional features such as automatic control systems, alarm devices, or integration with other intelligent devices can be added to enhance the overall performance and safety of the filter.

Ultimately, close collaboration with us is key to customizing chemical filters. DSX's expertise and experience will help you understand the performance of different materials and best practices, ensuring that you receive a chemical filter tailored to your specific needs.

In conclusion, customizing chemical filters is entirely feasible and can be designed and manufactured to meet your specific requirements, providing you with the best gas treatment solution. Collaboration with a third-party testing company and DSX will ensure you have accurate data and high-quality products to address your unique needs.
Why choose your company over other manufacturers?

We have complete control over the entire production process, from sourcing raw materials to manufacturing and final product delivery. This allows us to better control costs and ensure product quality.

1. Advanced Manufacturing Equipment: Our sheet metal processing equipment includes AMADA CNC punching machines, laser cutting machines, CNC bending centers, and laser welders. In comparison, many of our competitors only have basic equipment such as laser cutters, bending machines, and argon arc welders. Our advanced equipment enables higher precision and efficiency in production, resulting in higher quality products.

2. Fan Manufacturing Expertise: We have many years of experience in fan development and production. Unlike most of our competitors who purchase motors and impellers externally, we produce our own motors and impellers. We have a team of experienced motor engineers who can flexibly adapt and adjust parameters to meet customer requirements. Our products undergo rigorous testing and verification in our advanced research and development laboratory prior to mass production. Each fan also undergoes three stages of testing during the production process to ensure product quality. Our fans are known for their low noise, high airflow, stable operation, and long lifespan.

3. Filter Production: We have a dedicated filter production line, while many purification equipment manufacturers even outsource their filters. All our filters are produced in cleanrooms and undergo strict testing to ensure quality.

4. Control Systems: We have our own control system development department and can customize solutions to precisely fit your needs. In contrast, our competitors typically rely on pre-purchased controllers with limited customization options.

5. Full Industry Chain Advantage: As a primary manufacturer, we have control over the entire production process, allowing us to better control costs and ensure product quality. By directly managing the supply chain, we can avoid profit loss from intermediaries and offer more competitive prices.

6. Excellent Quality Control: As the controller of the full industry chain, we can implement strict quality control measures, including material selection, production processes, and quality standards. This ensures that our products meet customer requirements and improves customer satisfaction and trust.

7. Flexible Delivery Times: With over 20,000 square meters of modern industrial plants, we have higher production capacity and resources to better meet customer delivery requirements. We can flexibly adjust production schedules according to customer demands and timelines to ensure timely order fulfillment.

8. Professional R&D Team: We have dedicated R&D teams for motors, fans, control systems, purification equipment, and cleanroom engineering. With our rich R&D experience and technical strengths, we can help customers solve problems throughout the entire industrial chain. We are happy to share our expertise and provide technical services, regardless of whether you purchase our products.

9.Advanced Technological Equipment: We have introduced advanced production and testing equipment from both domestic and international sources, including automated production lines and precision testing instruments. In addition, we have established a wind tunnel laboratory to further enhance our capabilities. With these advanced and specialized equipment, coupled with our professional team, we are able to maintain a high level of quality in both the development of new products and the production process.

10. High-Quality Material Sources: We have established long-term partnerships with reliable suppliers to ensure the quality and stability of our raw materials. We only use high-quality materials to guarantee product durability and performance.

11. Strong Production Capacity: We have the ability to meet customers' large-scale production and efficient delivery demands. We can flexibly adjust production plans based on your order volume to ensure on-time delivery and product quality.

12. Reasonable Pricing Strategy: Our full industry chain production allows us to better control costs, enabling us to provide high-quality products at competitive prices. We optimize costs while ensuring product quality, thereby creating greater value for our customers.

13. Comprehensive Service System: Customer-centricity is at the core of our service approach. We provide all-round support, whether it's pre-sales consultation, communication during the sales process, or after-sales service. We are committed to meeting your individualized requirements and providing customized solutions. Choosing to work with us not only saves you money and gives you peace of mind but also provides strong support from our dedicated team and products.