0.45 μM PES Membranes Unsupported Film For Making PES Cartridge Filters

The Lenge PES membranes are highly asymmetric with a distinct uniform integral retention layer. The membranes have a high surface porosity and gradually increased pore size distribution in the direction facing upstream of filtration. Therefore, the membranes have a capability of retaining various sized particulates and biological species. The Lenge PES membrane filters have the following distinguished characteristics:

· High flux

· High capacity

· High porosity

· Low leaching

The validation of bacterial B. diminuta retention for 0.22 µm rated pharmaceutical grade cartridges was performed in accordance with American Society of Testing and Materials (ASTM) method F838-05. Using this test methodology, 0.22 µm rated pharmaceutical grade filters retained greater than 1 x 10⁷ CFU of B. diminuta per cm² of effective filter surface area.

Features and Benefits

• Complies with United States Pharmacopeia (USP) Biological Reactivity Test, In Vivo <88> for biosafety, cytotoxicity, and hemolysis testing.
• The optimized built-in Highly asymmetric prefilter layer for maximum flow and throughput performance.
• Compatible with EtO, gamma irradiation, and SIP/autoclave methods of sterilization.

Sealing methods

• Mechanical
• Heat
• Ultrasonic
• RF welding
• Insert molding

LENGE Membrane VS Some Other Brand Membrane

SEM micrograph for Surface of PES Microporous Membrane (0.22 µm)

LENGE Membrane Some Brand Membrane

Shown at 5000X magnification

Comments: LENGE Membrane Has More and Smaller Microporous Than Some Brand Membrane.

Dirt Holding Capacity Test - 0.22 µm PES Membrane by PVP

Test by Fermentation Broth

Dirt Holding Capacity Test - 0.22 µm PES Membrane by Fermentation Broth

Comments: 3M Vmax= 2500 L/m2; LENGE Vmax= 10000 L/m2

Test By 2.5% Bovine Serum

Dirt Holding Capacity Test - 0.22 µm PES Membrane by 2.5% Bovine Serum

Comments: 3M Vmax= 143 L/m2; LENGE Vmax= 204 L/m2

Bubble Point Consistency - 0.22 µm PES filter cartridges

LENGE, founded in 1998, is a comprehensive high-tech company integrating R&D, production, sales, testing and service. The products of LENGE cover microporous filter membrane, pleated filter cartridge, air filter, purification equipment and purification engineering supporting products. It strives to build an ecological industrial chain of purification industry

Through years of exploration and improvement, LENGE has passed ISO9001, ISO14001, ISO45001 quality, environment and occupational health and safety certification, and has obtained 37 authorized patents. With a number of independent core technologies, the company leads a number of scientific and technological projects above the provincial level, and sets up the provincial precision filtration engineering technology research center. After unremitting efforts, LENGE won the title of "Little Giant" company with specialization and novelty in the city.

LENGE has laid out a "Branded" marketing service network and established a "Real-time Response" after-sales service system. The company takes the lead in proposing "One-stop Service at LENGE Purification Boundary". Relying on the ever-increasing brand attraction, driving force and radiation, LENGE strives to build an all-round ecological purification industry chain.

LENGE adheres to the concept of "Taking quality as the foundation and serving as the purpose" and provides One-Stop Service for customers in cutting-edge industries such as pharmaceutical, food, microelectronics and environmental protection.

No bacteria and dust is our product pursuit

No mistake is our quality concept

No distance is our service tenet

By promoting the development of core competitiveness with culture, integrating professional talent team, constantly surpassing and climbing high, LENGE goes hand in hand with customers and share the vision!