Memtrex MP

Summary

Product identification

The Memtrex* MP (MMP) filters are constructed with hydrophilic polyethersulfone membranes and all polypropylene components, offering enhanced throughput and reliable particle retention. These filters are compatible with a broad range of chemicals and pH extremes, and their low protein-binding characteristics make them suitable for beverage, chemical, and pharmaceutical applications. MMP filters are manufactured using thermal welding techniques, without adhesives or additives, and are individually integrity tested.

Materials of Construction

• Filtration Media: Hydrophilic Polyethersulfone Membrane
• Support Layers: Polypropylene Microfiber
• Core and Cage: Polypropylene
• End caps and Adapters: Polypropylene
• Seal Elastomers: Buna-N, EPDM, Silicone, Viton, Teflon Encapsulated Viton¹
  • ¹Viton and Teflon are trademarks of The Chemours Company

Certifications

• Materials of construction meet the test criteria for USP Class VI-121°C plastics.
• Materials of construction for MMP-B and MMP-S meet U.S. FDA requirements for food contact under 21CFR177.
• Aqueous extracts typically contain less than 0.25 EU/mL of endotoxin.
• Filters typically exhibit low levels of non-volatile residues.

Quality Assurance & Traceability

Memtrex MP filters are manufactured under an ISO 9001 certified quality management system. Each filter has a lot code for traceability. Subassemblies are individually integrity tested.

Pore Size Rating (Air diffusion per 10” module after saturation with clean water)

• 0.03 µm: ≤ 45 cc/min at 50 psig (3.4 bar)
• 0.1 µm: ≤ 45 cc/min at 50 psig (3.4 bar)
• 0.2 µm: ≤ 19 cc/min at 30 psig (2.1 bar)
• 0.45 µm: ≤ 16 cc/min at 20 psig (1.4 bar)
• 0.65 µm: ≤ 12 cc/min at 13 psig (0.9 bar)

Filtration Efficiency and Microbial Retention

• Memtrex MP filters are absolute rated.
• Demonstrated ≥99.9% initial particle retention efficiency at the rated pore size based on ASTM F661.
• Good microbial retention for bioburden control based on ASTM F838-83, using a nominal challenge of 10⁷ cfu/cm² of membrane area:
  • 0.2 µm: Brevundimonas diminuta ≥7 Log Reduction Value (LRV)
  • 0.45 µm: Serratia marcescens ≥7 Log Reduction Value (LRV)
  • 0.65 µm: Pediococcus damnosus ≥7 Log Reduction Value (LRV)

Mechanical / Hydraulic

Dimensions

• Nominal O.D.: 2.75” (70 mm)
• Nominal I.D.: 1.25” (31 mm)
• Effective Filtration Area (per 10” length): 7.65 to 8.63 ft² (0.711 to 0.802 m²)

Operating limits

• Max. Forward Differential Pressure: 60 psi (4.1 bar) at 70ºF (21ºC)
• Max. Reverse Differential Pressure: 30 psi (2.1 bar) at 70ºF (21ºC)
• Max. Operating Temperature: 180ºF (82ºC) at 10 psid (0.7 bar) in water

Sanitization

Memtrex MP filters may be autoclaved or in situ steam sterilized. Filters requiring steam sterilization must have Z or Q adaptors.

• Medium: Steam
• Maximum Temperature: 125°C (257°F)
• Maximum Cumulative Exposure: 10 hours Alternatively, filters may be sanitized with compatible chemical agents.

Applications

• Chemical Process Industry:
  • Dependable particle control in aqueous inks and dyes.
  • Filtration of technical grade bulk aqueous chemicals including acids, bases and oxidizers.
• Medical and Pharmaceutical Applications:
  • Particulate and bio-burden control in upstream pharmaceutical processes that do not require sterilizing grade filters (e.g., bulk intermediates and large volume parentals).
  • Filtration for microbiological stability of serums and other cell culture media.
  • Protection to reduce loading and extend service life of downstream sterilizing grade cartridge filters in aseptic packaging operations.
  • Retrofit filter alternatives for endoscope reprocessing machines.
• Microelectronics:
  • Reliable particle control for recirculating ultrapure de-ionized water loops.
  • Clarification of bulk high purity aqueous chemicals.
  • Point of use filtration of purified water and aqueous chemistries.
• Food and Beverage:
  • Clarification and microbial control for bottled water packaging.
  • Clarification and microbial control for ingredient and process waters.
  • Filtration for improved microbiological stability of non-pasteurized beers and wines.

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Disclaimer: This summary is generated from extracted text and may not include all figures, footnotes, or the latest revisions. Contractual data must match the OEM PDF revision used on the project.

Official datasheet (PDF)

Lenntech datasheet mirror