Product Introduction
LEFILTER proudly offers the IntegraPac™ IP-51 Ultrafiltration Membrane for Electronic Grade Ultrapure Water, a highly engineered module designed to deliver precision filtration in semiconductor and microelectronics water treatment systems. Developed as a high-quality DuPont equivalent, this UF membrane excels in removing colloidal particles, microorganisms, and fine particulates from feedwater, making it ideal for final-stage polishing in ultrapure water (UPW) production lines.
With its compact, fully integrated design, the IP-51 simplifies system layout and installation while maintaining high performance and reliability. The membrane utilizes advanced PVDF hollow fiber technology to achieve outstanding chemical resistance, thermal stability, and extended operational life. In environments where even trace contaminants can compromise microcircuit fabrication or photolithographic alignment, the IntegraPac™ IP-51 ensures the ultrapure water supply meets the most stringent industry standards.
Technical Specifications
Parameter | Value |
---|
Model | IntegraPac™ IP-51 |
Membrane Material | Hydrophilic PVDF (Polyvinylidene Fluoride) |
Filtration Type | Hollow Fiber (Outside-In) |
Effective Membrane Area | 51 m² |
Nominal Pore Size | 0.03 µm |
Operating Pressure Range | 0.1 – 0.3 MPa |
Maximum Operating Pressure | 0.6 MPa |
Operating Temperature | 5 – 45°C |
Backwash Pressure (max) | ≤ 0.3 MPa |
pH Range (Continuous Operation) | 3 – 10 |
pH Range (Cleaning) | 2 – 12 (short-term: 1–13) |
Filtrate SDI | ≤ 1.0 |
Bacteria & Virus Removal | ≥ 99.999% |
Module Housing | Integrated ABS / Optional SS |
Module Configuration | Compact Rack-Mount Design |
Flow Direction | Vertical (standard) |

This unit's compact design makes it an ideal choice for modular, space-saving installations in high-purity water facilities.
Application Fields
The IntegraPac™ IP-51 Ultrafiltration Membrane is purpose-built for ultrapure water systems used across a range of cutting-edge industries:
Semiconductor Manufacturing: Enables ultra-low TOC and high resistivity rinse water for wafer cleaning, oxidation, and photolithography processes.
Flat Panel Display (FPD) Fabrication: Maintains precision screen production by eliminating particles and biological contaminants from rinse water.
Solar Cell Production: Supports critical cleaning and etching steps in silicon wafer processing for high-efficiency photovoltaic modules.
Hard Disk Drive (HDD) Manufacturing: Ensures surface cleanliness during thin-film deposition and micro-assembly operations.
Precision Laboratories & Nanotech Facilities: Provides reliable ultrapure water for spectroscopy, microfluidics, and analytical testing.
In all these applications, the IP-51 plays a key role in reducing particle-induced defects, improving yield, and ensuring consistency in ultra-clean production environments.
FAQ
Q1: Is this membrane compatible with high-resistivity (>18 MΩ·cm) water systems?
A1: Yes, the materials used in the IP-51 module exhibit ultra-low ion release and organic leaching, ensuring it supports and maintains high-resistivity water quality in sensitive microelectronics environments.
Q2: What advantages does the IntegraPac™ IP-51 offer over traditional UF modules?
A2: The IP-51 features an integrated design with fewer external connections, which reduces installation time, minimizes leakage risk, and supports a cleaner system footprint—all while maintaining high throughput and ultrafine filtration performance.