Memtrex MP

Summary

Product identification

Memtrex MP (MMP) filters are constructed with hydrophilic polyethersulfone membranes and all polypropylene components. They exhibit enhanced throughput and reliable particle retention. These filters are compatible with a broad range of chemicals and pH extremes, with low protein-binding characteristics suitable for beverage, chemical, and pharmaceutical applications.

The filters are constructed using thermal welding techniques, containing no adhesives or additives. Individual integrity testing assures performance.

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

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

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)

Common 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 not requiring sterilizing grade filters (e.g., bulk intermediates, large volume parentals).
  • Filtration for microbiological stability of serums and 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.

Quality Assurance & Traceability

Memtrex MP filters are manufactured under a quality management system certified to meet ISO 9001 standards. Each filter is assigned a lot code for traceability of data and materials.

Integrity Testing

Subassemblies used to construct Memtrex MP filters are individually integrity tested. 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, demonstrating ≥99.9% initial particle retention efficiency at the rated pore size based on ASTM F661 test methodology.

Microbial retention characteristics (based on ASTM F838-83 test methodology using a nominal challenge of 10⁷cfu/cm² of membrane area):

• 0.2 µm: Brevundimonas diminuta, Log Reduction Value (LRV) ≥7
• 0.45 µm: Serratia marcescens, Log Reduction Value (LRV) ≥7
• 0.65 µm: Pediococcus damnosus, Log Reduction Value (LRV) ≥7

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.

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

Ordering Information

The filter's ordering code is structured as follows: MMP - Pore Size - Length - Adapter #1 - Adapter #2 - Elastomer Material

• Filter Type: MMP (Memtrex MP)
• Pore Size:
  • 83 = 0.03 µm
  • 91 = 0.1 µm
  • 92 = 0.2 µm
  • 94 = 0.45 µm
  • 96 = 0.65 µm
• Cartridge Length:
  • 1 = 10 in
  • 2 = 20 in
  • 3 = 30 in
  • 4 = 40 in
• Adapter #1:
  • A = Open End Gasket
  • B = 120 O-Ring
  • C = 213 O-Ring
  • E = 222 O-Ring
  • F = 226 O-Ring
  • J = 020 O-Ring
  • Q = 222 O-Ring with stainless steel Insert³
  • Z = 226 O-Ring with stainless steel Insert³
• Adapter #2:
  • A = Open End Gasket
  • B = 120 O-Ring
  • C = 213 O-Ring
  • G = Closed End
  • H = Fin Adapter
• Elastomer Material:
  • S = Silicone
  • E = EPDM
  • B = Buna
  • V = Viton
  • T = Teflon encapsulated Viton

³Q or Z Adapters normally require G or H adapters.

Flow Performance in Clean Water

The flow performance data based on a 10” length filter is not provided in a readable format in this extract. See the official PDF for exact tabulated values.

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Disclaimer: This summary is based on the provided text extract. It may not include all figures, footnotes, or the latest revisions found in the complete OEM PDF datasheet. For contractual data, always refer to the specific OEM PDF revision used on the project.

Official datasheet (PDF)

Lenntech datasheet mirror