Efficient liquid filtration is critical for maintaining process integrity in industrial water treatment, food and beverage production, and municipal water systems. AJR Melt Blown Filters represent a premier solution in sediment reduction and depth filtration. As a trusted distributor, Purecowater integrates these high-quality cartridges to solve complex filtration challenges for our clients.
Engineered using spun-bonded polypropylene utility, these filters offer superior chemical compatibility and high dirt-holding capacity. Whether you require pre-filtration for Reverse Osmosis (RO) units or certified filtration for potable water, AJR melt blown cartridges provide the reliability needed for continuous operation.

How AJR Melt Blown Technology Works
Unlike surface filters that trap particles only on the exterior, AJR melt blown filters utilize a depth filtration mechanism. They are manufactured through a process that thermally bonds polypropylene microfibers into a complex, fixed-pore structure. This manufacturing technique eliminates the need for surfactants, binders, or adhesives, ensuring that the filtrate remains contaminant-free from the filter itself.
Key Structural Advantages
- Graded Density Construction: The filter matrix typically features a coarser outer layer that captures larger particles and a finer inner layer for smaller particulates. This gradient density allows the entire depth of the filter to be utilized, significantly extending service life.
- Fixed-Pore Structure: The thermally bonded fibers prevent the pores from shifting under pressure, ensuring that trapped debris acts as a filter cake without unloading contaminants back into the stream during pressure surges.
- Core Integrity: Many series, such as the DMC, feature a polypropylene center core to enhance mechanical strength, allowing the cartridge to withstand higher differential pressures.
Featured Series: DMC-61 and DMB
AJR Filtration offers several configurations to suit specific industrial needs. The DMC-61 Series is particularly notable for high-purity water applications.
| Feature | DMC-61 Series | Standard MB / DMB Series |
|---|---|---|
| Certification | NSF/ANSI 61 Certified (Drinking Water) | Standard Industrial Grade |
| Core Material | Internal Polypropylene Core | Coreless or Molded Core Options |
| FDA Compliance | Listed Polypropylene CFR 177.1520 | Available on Select Models |
| Typical Application | Municipal Water, Bottled Water | Chemical Processing, Plating, RO Pre-treatment |
Technical Specifications and Performance
AJR filters are versatile, capable of handling broad chemical environments due to their 100% polypropylene construction. This makes them ideal for filtering plating solutions, acids, bases, and aggressive solvents.
- Micron Ratings: Available from 1 to 100 microns (nominal and absolute options available depending on series).
- Lengths: Standard lengths range from 10 inches up to 50 inches to fit various filter vessel housings.
- Diameters: Standard 2.5″ OD and Large Diameter (Big Blue style) 4.5″ OD.
- Maximum Temperature: Generally up to 176°F (80°C) for specific configurations compatible with hot water sanitation.
Common Industrial Applications
Due to their robust design and purity, AJR melt blown filters are deployed across a wide spectrum of industries:
- Municipal and Potable Water
- The DMC-61 series meets strict municipality purchasing specifications for drinking water safety.
- Reverse Osmosis (RO) Pre-Filtration
- Protecting expensive RO membranes from sediment and particulate fouling is crucial. AJR filters provide the necessary Silt Density Index (SDI) reduction.
- Food and Beverage
- Used for polishing water, juices, and rinsing fluids where non-shedding media is mandatory.
- Chemical and Oil & Gas
- Compatible with amines, glycol, and various process chemicals, these filters handle high fluid fluxes while maintaining efficiency.
At Purecowater, we understand that selecting the right depth filter is about balancing flow rate, pressure drop, and retention efficiency. Our team can help you identify the exact AJR series and part number required for your specific housing and fluid type.