Prefiltration

MicroFiber Max

Dual-layer glass microfiber cartridge

High-density prefiltration for critical clarification and membrane protection

Glass microfiber cartridge with a high-density prefilter, 0.45 to 1.2 µm, for critical clarification and protection of 0.2 and 0.45 µm membranes.

Line: MicroFiber · Glass microfiber
Ratings: 0.45 µm to 1.2 µm
Lengths: 10″ · 20″ · 30″ · 40″
Manufacturing: Argentina · ISO 7 cleanroom

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MicroFiber Max, dual-layer glass microfiber cartridge by Exova

Description

The MicroFiber Max is a glass microfiber cartridge for critical clarification processes. It incorporates a first layer of high-density glass microfiber, designed to maximize contaminant-holding capacity, followed by a final retention layer, also of glass microfiber.

This integrated two-stage architecture captures colloids and fine particles in stages and avoids surface blinding of the medium, which extends the service life of the final filter. It makes it possible to process larger batches with a single cartridge and to reduce line stoppages. It is designed as a prefilter for 0.2 and 0.45 µm sterilizing filtration membranes.

It is 100 % thermally welded and adhesive-free, with inert glass microfiber and a polypropylene structure. It is manufactured in a cleanroom environment, with materials that comply with FDA 21 CFR for food and beverage contact.

High-density prefilter

First layer of densified glass microfiber that retains solids before they reach the final retention layer.

Integrated two-stage design

Captures colloids and fine particles in stages and avoids surface blinding of the medium.

Protects 0.2 and 0.45 µm membranes

Designed as a prefilter for sterilizing filtration membranes.

Micron ratings from 0.45 to 1.2 µm

0.45, 0.65, and 1.2 µm, with 0.45 m² of filtration area per 10″ module.

Inert construction

Inert glass microfiber, 100 % thermally welded and adhesive-free.

Steam at 121 °C and water at 80 °C

Multiple cycles of 30 to 60 minutes; it also withstands peracetic acid or sodium hydroxide up to 1 %.

Technical specifications

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Materials

Prefilter medium	High-density glass microfiber
Final filter medium	Glass microfiber
Upstream and downstream supports	Polypropylene
Cage, core, and end caps	Polypropylene
O-rings and gaskets	Silicone (standard), EPDM, Buna-N, Viton®
Construction	100 % thermally welded, adhesive-free

Dimensions

Filtration area	0.45 m² per 10″ module
Lengths	10″, 20″, 30″, and 40″ (254, 508, 762, and 1,016 mm)
Outside diameter	2.7″ (68 mm)

Operating conditions

Maximum operating temperature	80 °C (176 °F)
Maximum differential pressure (forward)	5.5 bar at 25 °C
Maximum differential pressure (reverse)	2.1 bar at 25 °C

Sterilization and sanitization

Steam sterilization	Multiple cycles of 30 to 60 minutes at 121 °C, in-line or in an autoclave (1)
Hot water sanitization	Multiple cycles of 30 to 60 minutes at 80 °C (1)
Chemical sanitization	Multiple cycles of 30 to 60 minutes with peracetic acid or sodium hydroxide up to 1 % (10,000 ppm)
Note (1)	Suitable only for single-open-end cartridges

Quality and compliance

Materials that comply with FDA 21 CFR for food and beverage contact
Manufactured in a cleanroom environment

Applications

Pharmaceuticals: clarification of solutions and protection of final membranes (0.2 to 0.45 µm)
Beverages: wine, beer, bottled water, juices, and spirits
Fine chemicals: solvents, reagents, and purified water
Process water: reverse osmosis (RO) prefiltration
Cosmetics: lotions, creams, and perfumes

Industries

Pharmaceutical and biotech Food and beverage Wine industry Water treatment SaniFlow filter housings

Frequently asked questions

What is different about the MicroFiber Max prefilter layer?

It is made of high-density glass microfiber: it retains solids before they reach the final retention layer, which is also glass microfiber. This way it captures colloids and fine particles in stages and avoids surface blinding.

What micron ratings are available?

0.45, 0.65, and 1.2 µm, in lengths of 10″, 20″, 30″, and 40″, with a 2.7″ (68 mm) outside diameter.

Can it be used for wine?

Yes. Wine is among its beverage applications, along with beer, bottled water, juices, and spirits. Its materials comply with FDA 21 CFR for food and beverage contact.

What operating conditions does it withstand?

Up to 80 °C operating temperature. The maximum differential pressure is 5.5 bar at 25 °C forward and 2.1 bar at 25 °C reverse.

When should it be chosen over the MicroFiber Protec?

When the goal is the highest dirt-holding capacity ahead of a 0.2 or 0.45 µm final membrane: the MicroFiber Max has a densified prefilter and micron ratings from 0.45 to 1.2 µm. The MicroFiber Protec covers 0.45 to 20 µm and has more area: 0.65 m² per 10″, versus 0.45 m².

MicroFiber line