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Understanding Absolute Filtration vs. Nominal Filters

Many standard pleated filters carry nominal ratings, meaning they trap only a percentage of particles at their designated micron size. Under fluctuating pipeline pressures or sudden flow surges, these elements can stretch, leading to particle unloading and downstream contamination.

NutraFilter™ Absolute Pleated Filter operates on a strict absolute retention mechanism. Utilizing a multi-layered, high-density polyolefin or micro-fiber depth matrix, each element is rated at a Beta ratio of This means the filter successfully traps 99.98% of target particulates at its specified micron level, even when faced with shifting differential pressures or high-velocity product streams.

Switching to an absolute pleated depth matrix delivers two distinct benefits:

• Total Batch Security: You get an unyielding physical barrier that guarantees consistent clarity and purity from the start of a production run to the very end.
• Protection for Fine Membranes: When placed directly upstream of final sterilizing membrane filters, the NutraFilter™ Absolute Pleated Filter acts as a high-capacity shield, catching bulk yeasts, gums, and micro-gels so your expensive terminal membranes do not blind prematurely.

Optimized Pleat Geometry for Viscous Ingredients

Nutritional liquids, dairy products, and syrup bases often present high viscosity and heavy particulate loads. Standard tightly packed pleats can quickly pinch shut under these conditions, blinding the filter surface and causing a rapid, costly spike in differential pressure (ΔP).

NutraFilter™ Absolute Pleated Filter series features a specialized, computer-optimized pleat spacing matrix. By maintaining uniform separation between each fold, liquid can easily access the entire depth of the media sheet. This engineering design allows the cartridge to store a massive volume of solid contaminants within its internal pathways, resulting in significantly longer processing runs and fewer mid-batch element change-outs.

Pure Thermal Bonding with No Binders

Introducing foreign chemicals, glues, or resins into a nutritional product line can ruin flavor profiles, compromise regulatory approvals, and present major safety risks. Every NutraFilter™ Absolute Pleated Filter is constructed using advanced thermal bonding technology. The filtration media, support layers, internal core, and heavy-duty endcaps are molecularly fused together using heat alone. This pristine manufacturing process yields a completely clean element that will not introduce extractables, surfactant residues, or off-flavors into your delicate ingredient stream.

Rugged Hard-Cage Construction for Demanding CIP Routines

Nutritional processing lines require rigorous sanitation protocols to prevent bio-burden accumulation. Filter cartridges must endure harsh chemical washes, backflushing stress, and high-temperature sanitation loops without structural failure.

The structural frame of the NutraFilter™ Absolute Pleated Filter cartridge is built for extreme durability. Encased in a rigid, thick-walled outer cage and supported by a heavy-duty internal core, the pleated media is fully protected against mechanical distortion. The element reliably withstands repeated hot water sanitization and in-line steam sterilization cycles up to 135°C (275°F), ensuring a long operational lifetime in demanding multi-shift processing plants.

Standard Formats and Application Parameters

NutraFilter™ Absolute Pleated Filter elements are manufactured in lengths ranging from 10 to 40 inches to fit your current housing assets. NutraFilter™ Absolute Pleated Filter are available in all major industrial adapter styles, including standard Code 7 locking bayonets with double 226 O-rings, Code 3 double 222 configurations, and traditional double-open-end designs.

• Absolute Micron Availability: 0.2, 0.2,0.45,0.5,0.65, 1.0, and 5.0 micron absolute ratings.
• Filter Media: High-Density Polypropylene (PP) Microfiber Matrix/ Glass Fiber
• Standard Outer Diameter: 2.7 inches (69 mm).
• Maximum Operating Temperature: PP 25 0 C @ 6.9Bar.,60 0 C @ 4 Bar,80 0 C @ 2.4Bar /Glass Fiber- 110 0 C @ 1bar Support adaptors are recommended for temperature 80 0 C
• Recommended Change-out Pressure: 2.4 bard (35 psid) to ensure maximum production efficiency and optimal pump power consumption.
• Maximum Operation Differential Pressure: 4.0 bar @ 20 0 C/ 2.4 Bar @ 80 0 C Cage/Core/End Cap: Polypropylene (PP)
• O-rings: Silicone, EPDM, PTFE, Viton, FEP

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Here are the answers to the most common questions plant engineers

Q:What is the difference between a “Nominal” filter and the “Absolute” rating of the NutraFilter™?

A nominally rated filter is basically an estimate; it might trap anywhere from 60% to 90% of particles at its designated micron size under perfect conditions. However, if your pump surges or pressure spikes, those pores stretch and let particles slip through. NutraFilter™ Absolute Pleated Filter elements are certified Absolute with a Beta ratio of 5000. This means that under real-world, high-pressure plant conditions, the filter guarantees 99.98% removal efficiency of all particulates at its specified micron rating.

Q.Why is optimized pleat spacing so important for nutritional liquids and dairy alternatives?

Nutritional drinks, protein shakes, and plant-based milks (like oat or almond milk) are thick and packed with suspended solids. If a filter’s pleats are packed too tightly together, the heavy liquid can cause the pleats to pinch shut or “blind” almost instantly, ruining the cartridge long before it is actually full of dirt.

NutraFilter™ Absolute Pleated Filter utilizes a wider, highly uniform pleat geometry. This ensures the fluid can easily travel down into the valleys of every single fold, utilizing the full depth of the media to store solids. This drastically extends the life of the cartridge in heavy or viscous streams.

Q.Can the NutraFilter™ Absolute Pleated Filter be used as a final filter, or is it strictly for pre-filtration?

It can do both depending on your facility’s specific goals:

• As a Final Filter: It is ideal for final polishing and particulate control in products like liquid vitamins, syrups, and functional beverages where you need absolute clarity and sediment removal down to 0.5 or 1.0 micron, but do not require absolute cold sterilization.
• As a Pre-Filter: It serves as the ultimate high-capacity shield directly upstream of expensive final membrane filters (like our Hy-PureFB™). By catching the bulk proteins, yeasts, and micro-gels, the NutraFilter™ prevents your fine membranes from blinding prematurely, saving you thousands in operational replacement costs.

Q: How does this filter hold up against clean-in-place (CIP) chemicals and steam?

It is built specifically for it. Many standard industrial filters use cheap glues, resins, or foam gaskets to hold their components together, which disintegrate quickly under the thermal stress of chemical washdowns or steam sterilization.

The NutraFilter™ is constructed entirely via thermal bonding—meaning every single piece of polymer is molecularly melted and fused to the next using heat alone. Backed by a rugged, heavy-walled structural outer cage, it can withstand repeated hot water sanitation and in-line steam loops up to 135°C (275°F) without warping, cracking, or introducing extractables into your line.

Q.Are these elements safe for allergen-free processing lines?

Yes. NutraFilter™ elements are manufactured from pure, virgin polyolefin or microfiber media and are 100% free of silicone, binding resins, and manufacturing lubricants. They comply fully with FDA CFR Title 21 food-contact regulations and meet strict USP Class VI plastics criteria. Because there are zero chemical additives, there is zero risk of flavor crossover or chemical leaching into your product batches.

Q.When should we change out the NutraFilter™ elements?

We recommend swapping the elements when your differential pressure (ΔP) reaches 2.4 bard (35 psid). While the heavy-duty inner core is structurally rated to handle higher pressures before collapsing, running past 35 psid forces your pumps to work significantly harder, spikes your energy costs, and can eventually cause particle unloading.