UNA-620AB Ultrafiltration Membrane for Electronic Grade Ultrapure Water Asahi Kasei Microza Equivalent

LEFILTER is proud to launch the UNA-620AB Ultrafiltration Membrane for Electronic Grade Ultrapure Water, a next-generation filtration module engineered to meet the most rigorous standards of purity and consistency required by the semiconductor, photovoltaic, and precision electronics sectors. Designed as a reliable equivalent to the Asahi Kasei Microza membrane series, the UNA-620AB combines advanced PVDF hollow fiber technology with precision-engineered performance to ensure exceptional filtration of particulates, microorganisms, and high molecular weight organics from ultrapure water systems.

Detailed Technical Parameters

The UNA-620AB membrane incorporates cutting-edge materials and structural engineering to deliver reliable separation performance while ensuring long-term operational stability. Its outside-in flow configuration allows for efficient particulate capture while maintaining low transmembrane pressure.

These specifications make the UNA-620AB suitable for high-throughput filtration where both purity and membrane longevity are critical.

Key Application Areas

As an Ultrafiltration Membrane for Electronic Grade Ultrapure Water, the UNA-620AB plays a central role in various high-precision manufacturing workflows where water purity has a direct impact on product integrity and yield. Its typical applications include:

• Semiconductor manufacturing lines – for rinsing wafers, photoresist development, and cleaning stages that demand sub-micron purity levels.

• LCD and OLED display production – where ultra-clean water is required to prevent visual defects or contamination.

• Precision optics and sensor fabrication – supporting defect-free environments.

• Solar cell manufacturing – ensuring high-efficiency outputs through clean processing water.

• Final filtration stages in UPW systems – used as a polishing step following reverse osmosis and deionization.

• Process water systems in nanotechnology labs – where even minute impurities can disrupt experiments or fabrication.

Thanks to its dependable performance and compatibility with industry-standard filtration systems, UNA-620AB serves as a high-value alternative to traditional Microza modules, without sacrificing filtration effectiveness or operational convenience.

Product Advantages

• Optimized Performance for UPW: Tailored to meet the extremely low particulate and TOC (total organic carbon) requirements of electronics-grade water.

• Superior Membrane Durability: The PVDF structure resists chemical and thermal degradation, supporting long-term, stable operation.

• Consistent Flux Rates: Engineered to maintain a high flow rate with low fouling characteristics, even under continuous-duty conditions.

• Drop-in Replacement Design: Functionally equivalent to Microza membranes, simplifying retrofit and maintenance activities.

• Eco-efficient Operation: High recovery rates and low chemical cleaning requirements reduce operating costs and environmental impact.

FAQ

Q1: What differentiates the UNA-620AB from the UNA-620A membrane?

A1: The UNA-620AB features an enhanced fiber structure and improved pressure tolerance, making it more suitable for systems requiring robust operation under fluctuating conditions or higher throughput demands.

Q2: Can this membrane be used as a final filtration step in a multi-stage ultrapure water system?

A2: Yes. The UNA-620AB is designed specifically for polishing-grade ultrafiltration and works efficiently downstream of RO and DI stages to deliver consistently clean UPW.