Micro Air Logo
Slide#1
Slide#2
transparent_image

Contact Us
WHAT'S NEW RWC for Combustible dusts Hydromax® RWC Wet Collector
Roto Pulse Cartridge Cleaning System Roto Pulse® Cartridge Cleaning System  

VFDs (variable frequency drive) benefits on a Dust Collection System - 05-21-2026

Variable frequency drives (VFDs) have become an essential component in modern dust collection systems, especially for facilities focused on operational efficiency, equipment longevity, and consistent airflow performance. Whether in woodworking, metal fabrication, manufacturing, or industrial processing environments, maintaining proper dust collection is critical for employee safety, air quality compliance, and production reliability. A VFD delivers the control and adaptability needed to optimize these systems while significantly reducing energy consumption.

Traditional dust collection systems often operate at full motor speed regardless of the actual airflow demand within the facility. This approach wastes energy and places unnecessary strain on fans, motors, and filters. A VFD solves this problem by adjusting motor speed based on real-time system requirements. Instead of running at 100% capacity continuously, the dust collector motor can ramp up or down depending on machine usage, blast gate positions, or system pressure readings.

The energy savings associated with VFD technology are substantial. Fan systems follow the affinity laws, meaning even small reductions in motor speed can dramatically reduce power consumption. For example, reducing fan speed by 20% can lower energy use by nearly 50%. In large industrial facilities where dust collection systems operate around the clock, these savings quickly translate into thousands of dollars annually. By matching motor output to actual demand, facilities avoid paying for unnecessary airflow and reduce overall electrical load.

Beyond energy efficiency, one of the greatest advantages of a VFD is maintaining consistent CFM (cubic feet per minute) throughout the dust collection network. Consistent airflow is essential to ensuring proper capture velocity at each machine and preventing dust buildup within ductwork. Without a VFD, airflow can fluctuate significantly as equipment cycles on and off. When fewer machines are operating, static pressure rises and airflow can exceed design specifications, creating turbulence and excessive filter wear. Conversely, when additional machines come online, airflow can drop below acceptable levels, reducing collection effectiveness and potentially creating safety hazards.

A VFD continuously monitors system conditions and adjusts fan speed to maintain target static pressure and airflow levels. This dynamic control ensures every machine receives the correct CFM required for effective dust capture. The result is a more balanced system, improved air quality, and reduced risk of combustible dust accumulation.

VFDs also contribute to longer equipment life and reduced maintenance costs. Soft-start functionality eliminates the harsh electrical and mechanical shock associated with across-the-line motor starts. Bearings, belts, and fan assemblies experience less wear because the system operates more smoothly and only at the speeds required. Filters benefit as well, since excessive airflow and pressure spikes are minimized. Over time, facilities experience fewer breakdowns, lower maintenance expenses, and extended equipment lifespan.

In today’s industrial environment, energy efficiency and system performance are no longer optional—they are competitive advantages. Companies are increasingly focused on reducing operational costs while meeting stricter environmental and workplace safety standards. Integrating a variable frequency drive into a dust collection system provides an immediate and measurable improvement in both areas.

For facilities seeking to maximize performance, stabilize CFM, and reduce energy waste, a VFD is not simply an upgrade—it is an essential investment in the long-term efficiency and reliability of the entire dust collection operation

Read more →

Different characteristics of weld fumes from welding carbon steel vs aluminum on filter media - 05-21-2026

Weld fumes generated from welding carbon steel and aluminum differ significantly in their physical and chemical characteristics, and these differences directly affect the performance and maintenance of dust collector filter media. Understanding these distinctions is important for selecting the correct filtration system, maximizing filter life, and maintaining safe workplace air quality in industrial welding operations.

Carbon steel welding fumes are typically generated during processes such as MIG, TIG, stick, and flux-cored arc welding. These fumes primarily contain iron oxide particles along with smaller amounts of manganese, silica, and other alloying elements depending on the filler material and base metal composition. The particles produced during carbon steel welding are generally dark, dense, and magnetic. They tend to have irregular shapes and relatively larger particle sizes compared to aluminum fumes. Because iron oxide particles are heavier, they settle more quickly and are often easier for dust collector systems to capture using standard cartridge or baghouse filters.

One characteristic of carbon steel weld fumes is their tendency to form a relatively dry dust cake on filter media. This dust layer can actually improve filtration efficiency over time because it acts as a secondary filtering surface. Pulse-cleaning systems in dust collectors can usually remove this dust effectively, allowing filters to maintain acceptable airflow and pressure drop for extended periods. However, if moisture or oil contamination is present, carbon steel dust can become compacted and difficult to remove, reducing filter efficiency and increasing maintenance frequency.

In contrast, aluminum welding fumes present several unique challenges for filter media. Aluminum fumes are generated primarily during MIG and TIG welding and consist mainly of aluminum oxide particles. These particles are much lighter and finer than carbon steel fumes, making them more difficult to capture. Aluminum oxide particles are often submicron in size, allowing them to penetrate deeper into filter media. This can cause premature filter loading and reduced airflow if the filtration system is not specifically designed for fine particulate collection.

Another important difference is the physical behavior of aluminum dust on filter surfaces. Aluminum particles are softer and less dense, but they can be highly adhesive. Instead of forming a dry, porous dust cake like carbon steel fumes, aluminum dust may smear or embed itself into filter fibers. This characteristic can reduce the effectiveness of pulse-cleaning systems and shorten filter life. In some cases, specialized membrane-coated filter media, such as PTFE membranes, are used to prevent aluminum particles from penetrating deeply into the filter substrate.

Safety considerations also differ substantially between the two materials. Carbon steel weld fumes primarily present respiratory hazards due to metal oxide exposure. Aluminum dust, however, can create both respiratory and combustible dust hazards. Fine aluminum particles are potentially explosive when suspended in air at sufficient concentrations. Because of this, aluminum welding dust collection systems often require additional safety features such as spark mitigation, explosion venting, and conductive filter media to reduce static electricity buildup.

Overall, carbon steel weld fumes are generally easier to manage in dust collection systems because the particles are heavier, less adhesive, and more effectively cleaned from filter media. Aluminum weld fumes require more advanced filtration strategies due to their fine particle size, adhesive properties, and combustible nature. Proper filter media selection and dust collector design are critical to maintaining system efficiency, worker safety, and regulatory compliance in both welding applications. Contact you Micro Air rep today to help provide a solution that best fits your application for welding.

Read more →

Micro Air portable dust collectors. - 04-02-2026

Micro Air portable dust collectors represent a powerful, flexible solution for modern industrial air quality challenges, combining advanced filtration technology with mobility to deliver clean, safe working environments wherever they are needed. With over five decades of expertise in air filtration, Micro Air has established itself as a trusted leader in designing equipment that captures and removes harmful airborne contaminants across a wide range of industries.

At the core of Micro Air’s portable dust collectors is a commitment to performance and adaptability. These systems are engineered to handle diverse pollutants—including dust, smoke, fumes, mist, and odors—generated by processes such as welding, grinding, sanding, cutting, and mixing. Unlike fixed systems, portable units provide on-demand air filtration, allowing operators to position equipment exactly where contaminants are produced. This flexibility not only enhances air quality at the source but also reduces the need for costly facility-wide ventilation upgrades.

A defining feature of Micro Air portable collectors is our advanced filtration design. Many models utilize high-efficiency cartridge filters paired with the Micro Air’s proprietary Roto-Pulse® cleaning system. This innovative mechanism continuously cleans the entire surface of the filter using compressed air, significantly extending filter life while maintaining peak performance. Compared to traditional systems, this results in lower maintenance costs, improved energy efficiency, and reduced downtime—key advantages for productivity-driven environments.

In addition to cartridge-based systems(Like the TM1000), Micro Air offers media-based portable units that incorporate multi-stage filtration, including pre-filters, main filters, and optional HEPA or carbon filters. This layered approach allows businesses to customize their dust collection solution based on specific application requirements, whether capturing fine particulate in pharmaceutical settings or managing heavier dust in manufacturing operations. The ability to tailor filtration ensures optimal air purity while meeting regulatory standards such as OSHA and NFPA compliance.

Portability does not come at the expense of power. Micro Air portable collectors are designed with compact footprints and integrated mobility features, making them ideal for facilities with space constraints or dynamic workflows. Units such as the TM500 and TM1000 are equipped with source capture arms and flexible hoses, enabling precise extraction directly at the point of generation. This localized capture improves efficiency by preventing contaminants from spreading throughout the workspace. Beyond performance, Micro Air emphasizes user-friendly operation and long-term reliability. Quiet operation, energy-efficient motors, and durable construction ensure that systems can be seamlessly integrated into daily operations without disrupting workflow.

Additionally, Micro Air supports its products with a robust network of engineers, distributors, and technical specialists, World class customer service, providing guidance from system selection through installation and ongoing maintenance.

Ultimately, Micro Air portable dust collectors deliver a comprehensive solution for cleaner air and safer workplaces. By combining mobility, advanced filtration technology, and customizable configurations, these systems empower businesses to control airborne contaminants at the source, protect employee health, and maintain compliance with industry standards. The result is not only improved air quality but also enhanced operational efficiency and long-term value for organizations across a wide range of industrial applications.

Contact Micro Air today to provide a solution!

Read more →

Micro Air Powered Downdraft Tables: Clean Air. Easy Operation. Superior Performance - 03-31-2026

In today’s manufacturing and fabrication environments, dust, smoke, and fumes aren’t just nuisances—they’re serious threats to worker health, productivity, and regulatory compliance. Micro Air’s EXTREME AIR-MAX (XA Series) powered downdraft tables deliver a complete, plug-and-play solution that captures and contains these contaminants right at the source, creating safer, cleaner workspaces without the complexity of central ducted systems.

Engineered for heavy-duty use, these self-contained downdraft tables feature high-capacity cartridge filtration with Micro Air’s exclusive Roto-Pulse™ cleaning system. Whether you choose automatic or manual pulse, the patented rotating stainless-steel tube efficiently dislodges dust particles, extending filter life and maintaining consistent performance. Filters are fire-retardant with several medias depending on your application, with an optional 99.97% HEPA after-filter for the most demanding applications. Models deliver powerful airflow at from 1,500 CFM (XA23M – 2 ft × 3 ft work surface) up to 6,000 CFM (XA46M 4 ft × 6 ft or XA38M 3 ft × 8 ft), achieving capture velocities up to 250 feet per minute—more than enough to pull welding smoke, grinding dust, sanding particles, and process fumes downward and away from the operator’s breathing zone.

Quiet operation is a standout advantage. At just 72 dBA at the operator position, these tables meet and exceed OSHA noise standards while an energy-efficient motor with built-in starter and overload protection keeps operating costs low. The spacious work surface—available in durable fiberglass, Rhino-coated steel, or painted options—includes a convenient tool tray, bolt-on holders, and easy-access front overhang. Hinged filter doors and a high-capacity dust tray make maintenance fast and tool-free. Add optional back, side, and top shields with hinged wing walls, slotted backdraft hoods, LED or prewired lighting, industrial casters, or a silencer for even greater versatility and containment.

The benefits are immediate and measurable. Workers enjoy unobstructed vision and cleaner air, reducing fatigue and respiratory risks while improving finish quality on welding, grinding, sanding, polishing, deburring, soldering, mixing, filling, and buffing operations. Facilities gain better OSHA and EPA compliance, lower housekeeping costs, and a healthier workforce that stays on the job longer. Portable and modular by design, XA Series tables move where the work is—ideal for job shops, vocational schools, metal fabrication, and commercial environments.

For more than 35 years, Micro Air has built its reputation on simple-to-use, remarkably efficient clean-air systems. The EXTREME AIR-MAX downdraft tables embody that legacy: powerful, reliable, and ready to work the moment they arrive. Whether you need a compact 2×3 bench or a large-scale 6,000 CFM workstation, these tables turn hazardous air into Breathe Easy™ performance.

Discover the difference Micro Air downdraft tables can make in your facility. Contact Micro Air today for a personalized quote, on-site demo, or to locate your nearest distributor. Clean air has never been easier—or more RED.


Read more →

Benefits of a Wet Collector for combustible metal dust - 02-03-2026

A wet collector, often referred to as a wet dust collector or wet scrubber, is highly effective for managing combustible metal dust due to its ability to safely capture and neutralize hazardous particles. Here are the key benefits of using a wet collector for combustible metals:
Explosion and Fire Risk Mitigation: Wet collectors use water to capture combustible metal dust, such as aluminum, titanium, or magnesium, preventing the formation of dry dust clouds that could ignite or explode. The wet environment significantly reduces the risk of deflagration compared to dry dust collectors. Safe Dust Handling: By saturating the dust with liquid, wet collectors eliminate the need for handling dry, combustible dust, which can be hazardous during collection, storage, or disposal. The collected dust is typically discharged as a slurry, reducing the chance of accidental ignition. Compliance with Regulations: Wet collectors help facilities comply with stringent safety standards, such as those set by the National Fire Protection Association (NFPA), particularly NFPA 660 Chapter 22 for combustible metals. These systems are designed to meet requirements for preventing dust explosions and ensuring worker safety. Efficient Particle Capture: Wet collectors are highly effective at capturing fine and ultrafine metal particles, which are common in processes like grinding, cutting, or sanding. This ensures cleaner air and reduces the risk of respirable dust exposure for workers. Reduced Maintenance Risks: Unlike dry collectors, wet collectors do not require frequent filter changes or handling of dry dust-laden filters, which can pose ignition risks. The wet system simplifies maintenance and minimizes the chance of sparks during cleaning. Versatility for Various Metals: Wet collectors are suitable for a wide range of combustible metals, including those that react with water (e.g., lithium or sodium), when properly designed with compatible liquids or additives to neutralize reactivity. Improved Workplace Safety: By controlling dust at the source and preventing its accumulation, wet collectors reduce the risk of secondary explosions caused by settled dust being disturbed. This creates a safer working environment. Environmental Benefits: Wet collectors can help reduce airborne pollutants, ensuring compliance with environmental regulations and minimizing the release of hazardous metal particulates into the atmosphere. Customizable Design: Wet collectors are made with stainless steel for specific applications, with features like corrosion-resistant materials, explosion-proof components, and automated slurry management, ensuring optimal performance for different metalworking processes. Cost-Effective Long-Term Solution: While initial costs may be higher than dry systems, wet collectors often have lower long-term maintenance and replacement costs due to their durability and reduced risk of catastrophic incidents.
In summary, wet collectors are a critical tool for safely managing combustible metal dust, offering superior safety, regulatory compliance, and operational efficiency in industries like aerospace, automotive, and metal fabrication. For specific applications, consulting your Micro Air sales rep or consult the factory for a dust collection expert to ensure the system is properly designed for the metal and process involved. More at microaironline.com

Read more →

How explosion vents work on a dust collection system - 12-19-2025

Explosion vents in a dust collection system are safety devices designed to mitigate the destructive effects of a dust explosion by releasing pressure and flames in a controlled manner. Here's how they work:
Purpose: Dust collection systems handle combustible dust (e.g., wood, metal, or grain dust), which can ignite and cause explosions in confined spaces. Explosion vents prevent catastrophic damage by providing a weak point in the system that opens during an explosion.

Design: Explosion vents are typically lightweight panels or membranes made of materials like metal or rupture panels, installed on the dust collector's housing. They are engineered to burst at a predetermined pressure, known as the "burst pressure" See Micro Air dust collector for example.

Operation:

Normal Conditions: The vent remains sealed, maintaining the system's integrity and allowing the dust collector to function as intended. Explosion Event: If an ignition occurs (e.g., from a spark or hot particle), the rapid combustion of dust creates a pressure wave. When this pressure exceeds the vent's burst pressure, the vent ruptures or opens. Pressure Release: The vent directs the expanding gases, flames, and pressure out of the dust collector, preventing the system from rupturing or collapsing.
Vent Placement: Vents are strategically placed to release the explosion safely, often directed to an unoccupied area or through ducting to the outside, away from personnel and equipment. This may involve flame-arresting devices to quench flames and (NRV) non return valves on the inlet and return air.

Standards Compliance: Explosion vents are designed to meet standards like NFPA 660 (National Fire Protection Association) , ensuring proper sizing, installation, and performance based on the dust's explosibility (Kst value) and system design.

Maintenance: After an explosion, the vent must be replaced, as it is a single-use device. Regular inspections ensure vents are free of dust buildup, which could hinder their operation.

By providing a controlled release path, explosion vents protect equipment, personnel, and facilities from the devastating effects of dust explosions. For specific applications, consult NFPA guidelines or a Micro Air dust collection system engineer to ensure proper vent sizing and installation.

Read more →

What will happen if you exceed the air to cloth ratio for filters in a dust collector? - 12-01-2025

If you exceed the air-to-cloth ratio (ACR, also called air-to-media ratio) in a dust collector — meaning you push more airflow (CFM) through the filter media than it’s designed for — several negative things happen, usually in this order:
Immediate drop in filtration efficiency

Higher face velocity forces dust particles deeper into the filter media (or straight through it in extreme cases). Fine particles that would normally form a dust cake on the surface now penetrate the media → higher emissions out the clean air plenum (visible stack plume, bypass, or failed opacity/emission tests).
Rapid increase in differential pressure

The same amount of dust is now loaded onto less effective surface area. Pressure drop across the bags/cartridges rises much faster → the system runs at higher static, even right after cleaning. Fans work harder, energy costs go up, and you may trip high-static alarms or shut down.
Reduced filter life

Excessive velocity causes flex fatigue and pinhole leaks or tears in bag filters. In cartridge collectors, it leads to media compaction, blinding, or cracks around the pleats causing bypass. Typical result: filter replacement interval drops from years to months.
Poor rotopulse cleaning

At high ACR, the dust cake doesn’t release properly during cleaning pulses because the air is pushing the cake into the media instead on the surface and letting it drop.
Reduced dust handling capacity in the hopper

Because cleaning becomes ineffective, more dust stays on the filters instead of dropping into the hopper.
Bottom Line

Exceeding the air-to-cloth ratio is the fastest way to destroy a dust collector’s performance and filter life. It’s almost never worth it to “just turn up the fan.” If you need more airflow, you have to add filter area (more cartridges, or a second module) or switch to a higher-ratio media/technology that is specifically rated for it.

Read more →

Revolutionize Robotic Welding with Micro Air's Wet Dust Collector: Precision Meets Purity - 11-11-2025

In the high-stakes world of robotic welding, where precision and productivity reign supreme, airborne contaminants pose a silent threat. Fumes, metal dust, and particulate matter not only compromise air quality but also jeopardize worker health, equipment longevity, and operational efficiency. Enter Micro Air's Wet Dust Collector—a game-changing solution engineered specifically for robotic welding environments. This innovative system captures hazardous emissions at the source, transforming dusty workshops into safe, compliant havens of innovation; while mitigating fire risk, unlike traditional cartridge collectors.


At the heart of modern manufacturing, robotic welding arms dance with flawless accuracy, fusing metals in automotive, aerospace, and heavy machinery production. Yet, each arc strike unleashes a toxic cocktail of welding fumes containing hexavalent chromium, manganese, and other heavy metals. Traditional dry filtration systems often fall short, risking fires from filter clogging and spark capture. Micro Air's Wet Dust Collector flips the script. By leveraging advanced wet scrubbing technology, it pulls contaminants into a turbulent water bath —neutralizing the risk of fire and fumes before they escape. This results in up to 99.5% efficiency in particulate removal utilizing 4 stages of filtration. Passing through water, a chevron filter, a MERV10 scrim filter, and finally a MERV 16 rinsible pleated filter, far surpassing industry standards.

What sets Micro Air's system apart is its seamless integration with robotic setups. Compact and modular, the collector mounts directly onto welding cells, minimizing footprint in space-constrained facilities. Its self-cleaning design uses cyclonic separation to maintain peak performance without frequent downtime. Imagine a continuous operation where robots weld uninterrupted, while the collector silently handles the mess—recycling water for sustainability and reducing waste compared to disposable-filter alternatives. The Micro Air rinsible MERV 16 after filter can be rinsed and re used several times before needing to be replaced. Saving your company money by extending the life of the filter.

Safety is paramount, and Micro Air delivers. Compliant with OSHA, EPA, and NFPA 660 guidelines, the Wet Dust Collector eliminates explosion risks associated with combustible dusts, a common hazard in welding, also mitigating the risk of fires in the collector. Workers breathe easier in cleaner air knowing that their health and safety is a priority. Environmentally, it's a win: the closed-loop system prevents pollutants from entering wastewater streams and is easily removed by a sludge vac or a manual shovel for safe disposal. But don't just take our word for it—efficiency metrics speak volumes. With energy consumption controlled by a VFD, it cuts operational energy costs while boosting consistent throughput. Customizable options, like variable speed fans, water level controls and high temp shut down monitoring for optimal scrubbing, ensure it adapts to diverse fume and alloys—from stainless steel to aluminum. Micro Air's team of engineers provide a turnkey solution, backed by a 2-year warranty and world class customer support, making adaption to your manufacturing process effortless.

In an era where manufacturers demand reliability and responsibility, Micro Air's Wet Dust Collector isn't just equipment—it's a strategic edge. Elevate your robotic welding operations today. Contact Micro Air to schedule a demo and experience the clarity of clean air. Your robots are precise; now, make your environment match that perfection.

Read more →

Air Quality in Welding Shops: When Ambient Filtration is the Answer - 10-29-2025


Welding is essential to fabrication, but it creates one of the most significant workplace air quality challenges. Every weld produces smoke, gases, and fine particulates that linger in the air long after the arc stops. If not controlled, these contaminants build into a haze that exposes workers, coats equipment, and leads to safety compliance risks.

Most welding operations start with source capture using arms, booths, or hoods positioned near the arc to pull fume away. But in real-world conditions, not every particle is captured. Some smoke escapes when welders reposition, some drifts into the general shop air, and some originates in locations where hoods are impractical for primary capture. This is where ambient air filtration becomes critical as a secondary option when source capture is impossible.

Micro Air’s MXT ambient air cleaners are designed to complement source capture, removing background fume from the entire welding shop. They restore visibility, reduce worker exposure, and maintain clean air throughout the facility.

Why Welding Fume Is a Serious Air Quality Concern Welding fumes contain fine metal particles, oxides, and gases. Depending on the materials welded, contaminants can include iron oxide, manganese, or hexavalent chromium. These particles are typically less than one micron in size, small enough to penetrate deep into the respiratory system.

Overexposure leads to health issues, from short-term irritation to long-term respiratory disease. OSHA has established strict permissible exposure limits (PELs) for welding-related contaminants. Meeting these limits requires more than partial fume control it requires a shop-wide approach that ensures both local capture and ambient cleaning.

Source Capture vs. Ambient Filtration Source Capture involves positioning arms, hoods, or booths near the welding arc. It is the first line of defense and is highly effective when welders can position hoods correctly, removing the gases away from their breathing zone.

Ambient Filtration addresses everything that escapes source capture. Units are mounted overhead or on walls, circulating shop air continuously. They remove the haze that builds in open areas, corners, and spaces where source capture is not practical.

In welding shops, the best results come from combining both methods:

Source capture removes fume directly at the weld. Ambient systems like Micro Air’s MXT units clean the overall air volume, eliminating residual smoke and maintaining background air quality.
When Ambient Filtration Is the Answer Not every welding shop can rely solely on source capture. Facility managers should consider ambient filtration when:

Multiple welders work in the same space and source capture cannot cover every station simultaneously. Welders move frequently, making hood repositioning impractical. Large parts or assemblies prevent the use of close-proximity hoods. Shops experience visible haze despite having some local exhaust systems. Bridge cranes or cannot access weld area directly.
In these situations, ambient filtration ensures that the entire facility benefits from continuous air turnover and cleaning.

Micro Air’s MXT Ambient Air Cleaners The MXT series from Micro Air is designed for heavy-duty welding environments where background fume control is essential.
How They Work MXT units are ceiling- or wall-mounted, creating push-pull airflow patterns that continuously cycle air through filters. Contaminated air passes through multi-stage filtration, including high-efficiency filters for fine particulates. Clean air is discharged back into the shop, reducing haze and restoring safe air quality. Key Benefits Whole-shop coverage for welding bays, fabrication areas, or open-floor layouts. Scalable design, allowing multiple units to be combined for larger facilities. Low maintenance, with easy filter access and long service intervals. Compliance support, helping facilities maintain OSHA PEL limits.
Designing an Ambient Filtration System for Welding Shops Ambient systems must be tailored to the size and activity level of the shop. Considerations include:

Air changes per hour (ACH) required to maintain clean background air. Ceiling height and floor area, which determine the number and placement of MXT units. Type and intensity of welding, which influences filter media selection. Integration with source capture to create a layered approach.
Micro Air engineers work with facility managers to calculate airflow requirements, design layouts, and configure MXT units for maximum coverage and efficiency.

Maintenance and Monitoring Even with robust equipment, maintenance is essential for performance. For MXT units, best practices include:

Monitoring filter differential pressure to track loading. Replacing filters when efficiency declines. Inspecting units regularly to ensure airflow patterns remain balanced.
Cleaner Welding Shops with Ambient Filtration For welding shops, air quality is both a safety and compliance priority. While source capture remains the first defense, it cannot solve every challenge. Micro Air’s MXT ambient air cleaners provide the final layer of protection, ensuring that haze, background smoke, and residual fumes are eliminated across the facility.

With scalable designs, easy maintenance, and proven filtration, MXT units allow facility managers to maintain safe air, protect workers, and simplify compliance with OSHA standards.

Ready to Improve Air Quality in Your Welding Shop? Micro Air designs complete air filtration systems for welding environments, including source capture solutions and MXT ambient cleaners. Share your shop size, welding processes, and compliance needs, and our team will configure the right solution.

Breathe easy. With Micro Air, welding shops run cleaner, safer, and more productive.

Read more →

Industrial Dust Collectors: 5 Design Rules Every Plant Engineer Should Know - 10-14-2025


Dust drifting through the aisles, haze clinging to the rafters, operators clearing their throats between weld beads, if that sounds like a normal shift, the problem isn’t just housekeeping. It’s a collector that was sized by guesswork, fitted with the wrong filters, or starved by spaghetti-shaped ductwork. The result? Rising differential pressure, surprise filter swaps, and a friendly note from OSHA.

Before you sign off on a new system or retrofit the one you have walk through these five design rules. They’re drawn from decades of field fixes and the engineering baked into Micro Air’s FRP FORCE™ and RP Series cartridge collectors. Apply them once, and you can walk the plant floor for years without thinking about dust again.


1 | Calculate the Real CFM - Not a “Guesstimate”

Everything starts with airflow. Too little CFM and fine particulate slips past the hood; too much and you pay for horsepower that never translates into cleaner air. Map your process first, collector second:
Capture velocity comes first 100 – 250 fpm for most industrial processes. Hood area is next; multiply velocity by open area to find the raw CFM for each pickup. Static-pressure losses elbows, flex hose, spark arrestors can add inches of water-column resistance, so measure duct length honestly. A 10 percent growth factor cushions against future shifts or new equipment.
Short on time? Micro Air’s application engineers will plug your numbers into a worksheet and send back the fan curve plus the FRP or RP model that matches it.


2 | Choose Cartridge Media That Matches Your Dust

Filter life rises or falls on media selection. A cartridge that breezes through wood dust can blind in days on sticky chromium smoke. Match the dust, not the catalog photo.

Common Dust Best-Fit Media Why It Works Welding, laser or plasma smoke
Wood chips, fiberglass, abrasive composites
Humid or oily dust Nanofiber cellulose-poly blend
Spun-bond polyester
Oleophobic spun-bond Captures sub-micron fume on the surface, then pulses clean easily.
Tough fibers shrug off grit and can be washed if needed.
Repels moisture and oil so pulses stay effective.
Swapping media in an FRP FORCE™ or RP cabinet takes minutes and transforms a collector for a new product line without touching the shell or the fan.


3 | Respect the Air-to-Cloth Ratio

Air-to-cloth ratio (ATC) is airflow divided by filter area. Stay in the 2.0–3.5 : 1 sweet spot for dry dusts. Starving the filters forces the blower to fight a rising ΔP, guzzling compressed air and electricity. Oversizing wastes steel and floor space.

When CFM climbs, bolt on another RP filter module, the cabinets are built for that. Better yet, pair the blower with Micro Air’s Intelli-Touch™ VFD. The drive ramps the fan only as high as the pressure set-point demands, trimming motor energy by up to 60 percent and soft-starting to protect bearings.


4 | Lay Out Ductwork Like a Highway, Not a Labyrinth

A premium collector can’t defeat bad ductwork. Every tight elbow and abrupt transition steals static pressure; every branch that isn’t balanced robs a hood on the far end.

Keep runs as straight and short as the plant allows. Limit transitions to 3 : 1 tapers to avoid turbulence. Balance branches with blast gates or let Intelli-Touch™ handle it automatically. Segment capture zones so idle workstations aren’t pulling air they don’t need.

5 | Include NFPA and OSHA Safety Into the Original Design

Retrofitting explosion vents or spark arrestors after an incident is the most expensive compliance plan on earth. Start safe:

Spark arrestors upstream quench hot metal before it reaches cartridges. Explosion vents sized to NFPA 68 relieve pressure safely outdoors. Abort dampers pivot to blow a flame front out of occupied spaces. Wet collectors (HydroMax®) are mandatory for aluminum, titanium, and magnesium fines under NFPA 660. Continuous filter cleaning - Micro Air’s patented Roto-Pulse® keeps dust from baking onto filter pleats, reducing fire load.

A Day in the Life of a Well-Designed Collector

Monday, 07:00. Maintenance scrolls through the Intelli-Touch dashboard: airflow 18,200 CFM, ΔP a steady 2.1 in. wg, filter life 78 percent remaining. They tap once to acknowledge and grab coffee, not a wrench. The production floor is clear enough to see the crane rail 25 feet up. That’s what happens when airflow is sized, media is matched, ductwork is rational, and safety is built in, it just works.

Ready for a Free Spec Review?

Send Micro Air your hood sketches or the rough CFM numbers you have today. An engineer will sanity-check the design and suggest the right FRP FORCE™ or RP model. no pressure, no invoice. If we can’t cut energy or filter spend, we’ll say so. But nine times out of ten, a better spec pays for itself within the first year.


Read more →

NFPA 660 - 08-27-2025

NFPA 660, the "Standard for Combustible Dusts and Particulate Solids" (effective December 6, 2024), consolidates previous combustible dust standards (NFPA 61, 484, 652, 654, 655, and 664) into a single, comprehensive guideline. It aims to streamline compliance and enhance safety for industries handling combustible dust, including those using dust collectors. Below is a summary of key highlights relevant to dust collectors:

Key Highlights for Dust Collectors
Unified Framework: NFPA 660 merges fundamental requirements (Chapters 1-10) with industry-specific provisions (Chapters 21-25), making it a one-stop standard for dust collector compliance across sectors like woodworking, metalworking, agriculture, and chemical processing. Dust Hazard Analysis (DHA): Chapter 7 mandates a DHA to identify and mitigate combustible dust risks. For dust collectors, this involves assessing dust accumulation, ignition sources, and system design. Facilities must update their DHA every five years to ensure ongoing safety. Hazard Management (Chapter 9): Dust collectors must be designed and maintained to prevent dust accumulation and control ignition risks (e.g., static electricity, sparks). The standard emphasizes proper airflow velocities to avoid dust settling in ducts, a critical factor for dust collector performance. Industry-Specific Requirements: Wood Processing (Chapter 24): Dust collectors handling wood dust must meet strict filtration and location criteria. Enclosureless dust collectors are allowed indoors only under specific conditions (e.g., max 5,000 CFM, no active cleaning while running, 20 ft from exits). Combustible Metals (Chapter 22): Enhanced containment and filtration protocols are required for dust collectors managing highly reactive metal dusts (e.g., aluminum, magnesium), These dusts may require a “WET” collector like the Micro Air HYDROMAX series.. Agriculture/Food (Chapter 21) and Other Materials (Chapter 25): Tailored measures ensure dust collectors address unique risks, such as fine particulate buildup or chemical reactivity. Equipment Design and Placement: Dust collectors over 8 cubic feet are recommended to be located outside to reduce explosion risks. Indoor units must comply with spacing rules (e.g., 20 ft from occupied areas or exits) and avoid spark-generating operations nearby. Some may require flameless venting. See your Micro Air distributor. Equipment Design and Placement: Dust collectors over 8 cubic feet are recommended to be located outside to reduce explosion risks. Indoor units must comply with spacing rules (e.g., 20 ft from occupied areas or exits) and avoid spark-generating operations nearby. Some may require flameless venting. See your Micro Air distributor. Maintenance and Housekeeping: Regular maintenance of dust collectors is critical to ensure efficient operation and minimize dust buildup. Collected dust must be removed daily or more often if needed, especially for enclosureless systems. Explosion Prevention: While NFPA 68 (venting) and NFPA 69 (prevention systems) remain separate, NFPA 660 integrates their principles, requiring dust collectors to incorporate explosion isolation or protection where applicable.
Practical Implications for Dust Collectors

Compliance Continuity: If your dust collector met prior standards (e.g., NFPA 652 or 664), core requirements are largely unchanged, but documentation must align with NFPA 660’s structure. Enhanced Clarity: The standard resolves conflicts between previous guidelines, offering consistent terminology and expectations for dust collector safety. No Major Design Overhaul: Existing dust collector designs are generally still valid, though new technologies and research may refine future expectations.
NFPA 660 simplifies the regulatory landscape for dust collectors by providing a cohesive, risk-based approach to combustible dust safety, ensuring facilities can efficiently protect workers and operations from fire and explosion hazards. Micro Air is committed to providing companies for solutions to all of your Air Cleaning needs. Contact your Micro Air distributor for more information on how we can help!


Read more →

Understanding Dust Characteristics - 08-06-2025

There are many important details to consider when choosing the correct air filter, mainly dust characteristics. Below are the dirty little details we need to know to help you choose the best filter for your application:

Read more →

Cartridge filter dust collectors - 07-09-2025

Cartridge filter dust collectors deliver powerful, efficient, and low-maintenance solutions for capturing fine dust and particulates in industrial environments. Designed with advanced pleated filter media, these systems offer superior filtration, maximizing airflow while minimizing energy costs. Their compact design and easy-to-replace cartridges make them ideal for manufacturing, woodworking, metalworking, and pharmaceutical applications. With enhanced durability and compliance with strict air quality standards, cartridge filter dust collectors ensure a cleaner, safer workplace, boosting productivity and protecting your workforce.

Read more →

Robotic Weld Cells Air Change Rate - 06-27-2025

For a robotic Weld cell, the recommended air changes per hour (ACH) for fume extraction typically range from 10 to 20 ACH, depending on factors like the welding process, materials, fume generation rate, & local regulations. Micro Air suggests you get in contact with your local distributor to help work through the variables.
For more information, or help with a solution; please contact us today.

Read more →

WC5000 and WCCAB - 06-17-2025

Micro Air is thrilled to announce the launch of the redesigned WC5000 and the all-new WCCAB, now in full production as part of the Hyrdomax lineup. These advanced wet dust collectors are engineered to eliminate risks of fire and deflagration of combustible dust, ensuring safer operations while minimizing costly repairs and downtime.

Key Features of the WC5000 and WCCAB:
Micro Air’s WC5000 and WCCAB set a new standard in dust collection technology, providing businesses with reliable, high-performance solutions to maintain safe and efficient operations

Read more →

Benefits of a Wet Collector for combustible metals - 06-04-2025

Micro Air’s wet collector, often referred to as a wet dust collector or wet scrubber, is highly effective for managing combustible metal dust due to its ability to safely capture and neutralize combustible particles. Here are the key benefits of using a wet collector for combustible metals:

Read more →

Selecting Filter Media - 05-19-2025

It is important to discuss your application and environmental factors when choosing the correct filter media for your dust collector. Below is a brief description of the most common cartridge filter choices.

Read more →

Benefits of Telescopic Arm - 04-25-2025

A telescopic fume extraction arm offers several benefits for managing hazardous fumes and dust in workplaces like welding shops, laboratories, or industrial settings:

Read more →

Focus On Welding - 04-10-2025

Focus On Welding

Hazards of Weld Smoke and Fumes in the Workplace.

Overexposure to weld smoke and fumes can cause a wide range of health problems.

Metal dust particles in welding fumes are a leading cause of eye irritation in factories. Metal dust also can cause upper respiratory irritation with black material being coughed and sneezed from workers who are exposed to welding fumes. Metal dust particles are also known to cause headaches.
Manganese, the primary metal in welding wire, can cause workers to feel exhausted, apathetic and weak. It is also a primary cause of headaches. Chronic overexposure to such fumes leads to a condition known as “manganism” which is characterized by neurological and neurobehavioral health problems. The permissible exposure limit (PEL) for manganese is 5.0 milligrams per cubic meter TWA. Manganese is the trigger for EPA Rule 6x. Click HERE to learn more

Read more →

Case Study MXT3500 Oil Mist - 04-10-2025

Case Study MXT3500 Oil Mist

Application: Oil Mist
Location: Watertown, CT
Products: Micro Air MXT3500

Chief Complaint: A facility in Watertown Connecticut was worried about their quality of air inside their draw press production area. Amongst their biggest worries were clogging AC and heating units, as well as worker complaints and turnover. Upon initial review there was a noticeable haze throughout the work area. The initial contaminant reading inside of the facility using a Temtop air quality meter was 505.1 micrograms per cubic meter
Solution: After working with facility personnel Steve Roland with Aquest Corporation suggested a series of MXT3500 ambient air cleaners strategically placed to maximize the efficiency of the T – style air cleaner. The client chose to mount these with Micro Air provided wall brackets. Steve revisited the facility a few weeks after the installation of 12 – MXT3500s and retested the air at 48.3 micrograms per cubic meter. A dramatic drop in the level of contaminant found in the air.

Read more →

Why Roto-Pulse - 04-10-2025


Why Roto-Pulse

The Micro Air Roto-Pulse: Revolutionizing Dust Collection Technology

In the world of industrial air filtration, efficiency, durability, and innovation are key to maintaining a clean and safe working environment. Among the standout technologies in this field is the Micro Air Roto- Pulse system, a cutting-edge cartridge cleaning mechanism designed to enhance the performance of dust collectors. Developed by Micro Air Clean Air Systems, a leader in industrial air quality solutions, the Roto-Pulse system has redefined how filtration systems tackle dust and particulate matter, offering a quieter, more effective, and energy-efficient alternative to traditional methods.
What is the Micro Air Roto-Pulse?

At its core, the Roto-Pulse is a revolutionary filter cleaning system integrated into Micro Air’s cartridgebased dust collectors, such as the FORCE™ and RP series. Unlike conventional reverse pulse or backflush systems that rely on abrupt, high-pressure air blasts to dislodge dust from filters, the Roto-Pulse employs a unique, incremental rotation mechanism. A compressed air-driven tube, equipped with pre-drilled holes, rotates inside the filter cartridge, delivering precise pulses of air across the entire inner surface of the filter. This process ensures a thorough and uniform cleaning cycle, dislodging dirt particles and extending the lifespan of the filter. The system operates continuously while the dust collector is in use, keeping filters clean without interrupting airflow. This seamless operation translates to improved filtration efficiency, reduced maintenance downtime, and lower operational costs—benefits that resonate with industries ranging from manufacturing and welding to woodworking and pharmaceuticals. Click HERE to learn more

Read more →

We use cookies to make sure you have the best experience on our website. We don't sell your information. By continuing to use this site you are accepting this policy.