Membrane cartridges

LifePure W Graded

PES membrane cartridge for beer and wine

Bioburden reduction and yeast retention in beer, wine, and sparkling wines

Asymmetric PES membrane filter cartridge, 0.45 and 0.65 µm, for reducing bioburden and retaining yeasts before the bottling of beer, wine, and sparkling wines.

Line: LifePure · Polyethersulfone (PES)
Pore sizes: 0.45 µm to 0.65 µm
Lengths: 10″ · 20″ · 30″ · 40″
Manufacturing: Argentina · ISO 7 cleanroom

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LifePure W Graded, PES membrane cartridge for beer and wine by Exova

Description

The LifePure W Graded is an asymmetric polyethersulfone (PES) membrane filter cartridge with a graded structure, for the food and beverage industry, with a focus on beer, wine, and sparkling wines.

It is offered in two ratings: 0.45 µm, for reducing bioburden and yeasts before bottling, and 0.65 µm, for retaining particles and yeasts. The graded pore distribution increases flow rate and solids retention capacity, and extends the service life of the cartridge. It has 9,000 cm² (0.9 m²) of filtration area per 10″.

The PES membrane has low adsorption of color and aroma compounds, unlike nylon membranes, and is stable across the pH range of 1 to 14. The cartridge is integrity-testable, withstands repeated cycles of steam sterilization and of sanitization with hot water and chemical agents, and can be reused.

Two ratings: 0.45 and 0.65 µm

0.45 µm to reduce bioburden and yeasts before bottling; 0.65 µm to retain particles and yeasts.

Low color and aroma adsorption

The PES membrane adsorbs little of the color and aroma compounds, unlike nylon membranes.

Graded pore structure

The graded pore distribution maximizes flow rate and solids retention. 9,000 cm² (0.9 m²) of area per 10″.

Stable from pH 1 to 14

Broad chemical resistance of the membrane across the entire pH range of 1 to 14.

Integrity-testable

Final filter before bottling or prefilter with integrity testing. Withstands steam at 121 °C and can be reused.

Microbial retention

Values stated in the LifePure W Graded catalog.

0.45 µm > 10⁴–10⁶ Serratia marcescens Titer reduction (Tr)

0.65 µm > 10⁷ CFU/cm² Saccharomyces cerevisiae Titer reduction (Tr)

Technical specifications

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Materials

Filter medium	Asymmetric polyethersulfone (PES)
Outer support layer	Polypropylene
Inner support layer	Polyethersulfone
Outer cage	Polypropylene
Core	Polypropylene
Flat ends	Polypropylene
Fin	Polypropylene
Adapter (222 and 226)	Polypropylene with internal reinforcement
O-rings	Silicone, Viton, Buna, EPDM, PTFE-coated Viton

Dimensions

Nominal filtration area	9,000 cm² (0.9 m²) per 10″
Nominal length	10″ (254 mm), 20″ (508 mm), 30″ (762 mm), and 40″ (1,016 mm)
Nominal diameter	2.75″ (70 mm)

Operating conditions

Maximum differential pressure	5.5 bar (80 psi) at 25 °C
Maximum differential pressure in reverse flow	0.69 bar (10 psi) at 25 °C
Maximum differential pressure for change-out	2 bar
Membrane chemical stability	pH 1 to 14

Sterilization and sanitization

Steam sterilization	Multiple cycles of 30 to 60 minutes at 121 °C, in-line or in an autoclave, without loss of integrity
Hot water sanitization	Multiple cycles of 30 to 60 minutes with water at 80 °C
Chemical sanitization	Multiple cycles of 30 to 60 minutes with peracetic acid or sodium hydroxide, maximum concentration 1 % (10,000 ppm)
Restriction	Steam and hot water: only for single-open-end cartridges (configurations B, C, D, and E)

Quality and compliance

Materials compliant with FDA 21 CFR 177 for food contact
Complies with European Commission Directive 2002/72/EC and its amendments up to 2008/39/EC
Non-toxic components according to the migration test of the Argentine Food Code and Mercosur SGT3 standards
Manufactured in an ISO 7 cleanroom
On request, rinsed with purified water after manufacturing and integrity tested at the plant

Selection data

Rating selection
Rating	Challenge organism	Titer reduction (Tr)	Application
0.45 µm	Serratia marcescens	> 10⁴–10⁶	Bioburden and yeast reduction before bottling
0.65 µm	Saccharomyces cerevisiae	> 10⁷ CFU/cm²	Particle and yeast retention

Applications

Beer
Wine
Sparkling wine

Industries

Food and beverage Wine industry SaniFlow filter housings

Frequently asked questions

Which rating is better, 0.45 or 0.65 µm?

The 0.45 µm rating reduces bioburden and yeasts before bottling (challenge with Serratia marcescens, Tr > 10⁴–10⁶). The 0.65 µm rating retains particles and yeasts (Saccharomyces cerevisiae, > 10⁷ CFU/cm²).

Does the membrane affect color or aroma?

The PES membrane has low adsorption of color and aroma compounds, unlike nylon membranes.

Can the integrity be tested?

Yes. The cartridge is integrity-testable and is also used as a testable prefilter. They can also be ordered rinsed with purified water and with integrity tested at the plant.

How is it sterilized and sanitized?

With steam in-line or in an autoclave at 121 °C and with water at 80 °C, in cycles of 30 to 60 minutes (configurations B to E only), and with peracetic acid or sodium hydroxide up to 1 % (10,000 ppm).

LifePure line