LOFMEM-B

Summary

Product Identification

The LOFMEM™B Series are pleated polyethersulfone (PES) membrane cartridges designed for final filtration of wine and beverages. They are inherently hydrophilic and contain no added surfactants or wetting agents.

Features and Benefits

• Manufactured in an ISO Class 7 cleanroom environment
• 100% flushed with 18 MΩ-cm DI water and integrity tested
• Meets USP Class VI Biological Test for Plastics
• All materials are FDA listed for food and beverage contact
• Repeatably steamable and sanitizable
• High retention (LVR>7) of yeast and other spoilage organisms
• Pore size, lot, and serial number are stamped on each filter element for identification and traceability
• Provides high contaminant capacity, superior flow rates, and consistent removal of particles and microorganisms
• Highly compatible with rigorous sanitizing methods in the beverage industry
• Integrity testable design

Materials of Construction

• Media: Asymmetric polyethersulfone membrane
• Inner core, end caps, cage: Polypropylene
• Support layers: Spunbond Polypropylene
• Gaskets/O-Rings: Buna-N, EPDM, Silicone, Viton, Teflon encapsulated Viton O-Rings

Operating Limits

• Max. sustained operating temperature: 180°F (82°C) at 20 psid (1.38 bar)
• Max. differential pressure:
  • 60 psid @ 80°F (4.14 bar @ 27°C)
  • 30 psid @ 160°F (2.07 bar @ 71°C)
  • 15 psid @ 200°F (1.03 bar @ 93°C)
• Max. reverse differential pressure: 40 psid @ 70°F (2.76 bar @ 21°C)
• Recommended change-out pressure: 35 psid (2.4 bar)

Dimensions

• Micron ratings: 0.2 µm, 0.45 µm, 0.65 µm
• Nominal lengths: 9.75" (24.7 cm), 10" (25.4 cm), 20" (50.8 cm), 30" (76.2 cm), 40" (101.6 cm)
• Outside diameter: 2.7" (6.9 cm)
• Inside diameter: 1.0" (2.54 cm)
• Surface area: 7.6 ft² (0.7 m²) per 10 inch element

Performance Specifications

• Hot DI Water: Filter cartridge will withstand temperatures of 185°F (85°C) for up to 30 consecutive minutes.
• Cleaning/Sanitization: Compatible with most common chemical cleaning, sanitizing and sterilizing agents and with pH range from 1–14.
• Steam/Autoclave: Cartridges may be steamed or autoclaved for at least 50 half-hour cycles @ 275˚F (135°C).

Bacterial Retention Performance

• 0.2 µm: LRV for B. diminuta ≥ 7.8
• 0.45 µm: LRV for S. marcescens ≥ 8.5
• 0.65 µm: LRV for S. cerevisiae ≥ 11, LRV for L. brevis ≥ 7.6

Integrity Test Specifications

Minimum Bubble Point values and maximum Diffusive Air Flow (per 10-inch cartridge) values for LOFMEM-B filters wet with water:

• 0.2 µm:
  • Bubble Point: ≥ 38 psig (2.6 bar)
  • Diffusive Air Flow: ≤ 35 cc/min @ 30 psig (2.1 bar)
• 0.45 µm:
  • Bubble Point: ≥ 25 psig (1.7 bar)
  • Diffusive Air Flow: ≤ 35 cc/min @ 20 psig (1.4 bar)
• 0.65 µm:
  • Bubble Point: ≥ 18 psig (1.2 bar)
  • Diffusive Air Flow: ≤ 35 cc/min @ 15 psig (1.0 bar)

Certifications and Compliance

• Manufactured in an ISO Class 7 cleanroom environment.
• Meets USP Class VI Biological Test for Plastics.
• All materials comply with FDA title 21 of the Code of Federal Regulations Sections 174.5, as applicable for food and beverage contact.

Filter Specification Code (Ordering Information)

The filter specification code follows the format LMB-Length-RetentionRating-EndConfiguration-Gasket/O-Ring.

• Filter Series: LMB (LOFMEM-B)
• Nominal Length:
  • -9: 9.75"
  • -10: 10.0"
  • -20: 20.0"
  • -30: 30.0"
  • -40: 40.0"
• Retention Rating:
  • -0.2: 0.2 micron
  • -0.45: 0.45 micron
  • -0.65: 0.65 micron
• End Configuration:
  • DOE: Double Open End
  • -1: 226/Flat Single Open End
  • -2: 222/Fin Single Open End
  • -3: 226/Fin Single Open End
  • -4: 222/Flat Single Open End
  • -10: Double Open End, Internal O-Ring
  • -20: Single Open End, Internal O-Ring
• Gasket or O-Ring:
  • S: Silicone
  • B: Buna-N
  • E: EPDM
  • V: Viton
  • T: FEP/Viton (O-Rings only)

Flow Rate

A graph illustrates the typical flow rate for 10" cartridges at 70°F (21°C) across different micron ratings (0.2 µm, 0.45 µm, 0.65 µm) as a function of differential pressure. See the official PDF for exact tabulated values.

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Disclaimer: This summary is based on 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