PFA High-Purity Filter

I. Product Overview

The AOKAVI PFA High-Purity Filter is designed for microelectronics, semiconductor, and wet electronic chemical processing applications. It uses an all-fluoropolymer construction: the filter cartridge consists of hydrophobic polytetrafluoroethylene (PTFE) filter media with a melt-processable polytetrafluoroethylene (PFA) cage, end caps, support and drainage layers; the filter housing is made of ultra-pure PFA and contains no metal components. The product offers excellent chemical compatibility, extremely low extractables, and high retention efficiency, making it suitable for precision filtration and purification of strong acids and bases, high-temperature highly corrosive chemicals, and wet electronic chemicals in cleaning and etching processes.

The filter cartridge uses unique pleating technology to combine high retention efficiency with high flux, low pressure drop, and long service life. The housing features a compact design, low liquid retention, low material waste, a locking ring to secure the cartridge, and cleanroom cleaning and packaging. Each cartridge is 100% integrity tested and manufactured in a dust-free environment, making it suitable for critical wet electronic chemical filtration.

II. Core Features

• All-fluoropolymer structure with excellent chemical compatibility and low extractables

• High retention efficiency; pleated construction provides high flux and low pressure drop

• Cartridge maximum service temperature up to 185°C, suitable for high-temperature and highly corrosive environments

• PFA housing with no metal components and extremely low metal ion leaching

• Compact design, low installation space requirement, low liquid retention, and low material waste

• Locking ring secures the cartridge; cleaned and packaged in a cleanroom

• Cartridges are 100% integrity tested and manufactured in a dust-free environment

• Compatible with 222-end cartridges; housing accommodates 10"/20" cartridges with cartridge diameter ≤ Φ83 mm

III. Typical Applications

• Facility chemical precision filtration

• High-temperature highly corrosive chemical filtration

• Wet electronic chemical cleaning and etching process filtration

• Strong acid and strong alkali filtration

• Etching solution and cleaning solution filtration

IV. Main Technical Parameters

1. All-Fluoropolymer High-Retention-Efficiency Filter Cartridge

Membrane area reference (per 10-inch product):

The flow vs. differential pressure curves are based on pure water at 25°C and cover D68 and D83 specifications. Optional filtration ratings cover various grades from 0.01 μm to 10 μm. Actual selection should be verified against flow rate, differential pressure, and filtration rating requirements.

2. PFA Filter Housing

V. Selection and Use Notes

1. System temperature and pressure ratings should be determined by the lower rated value among components. The cartridge maximum service temperature can reach 185°C, but the PFA housing maximum operating temperature is 100°C. Therefore, overall system selection should be based on the rated conditions of the housing, seals, and other components.

2. Selection should comprehensively consider chemical compatibility, operating temperature, operating pressure, flow rate, filtration rating, cleanliness grade, connection type, and O-ring material.

3. The flow vs. differential pressure curves are based on pure water at 25°C. Actual high-viscosity, high-temperature, or high-contaminant-load conditions should be specially verified.

4. The 2/5/7 nm rating options are limited to PMPE membrane. Pre-wetting, cleanliness grade, and O-ring material can be selected according to process requirements.

5. Specific models, dimensions, and ordering codes are subject to AOKAVI's official selection catalog and ordering information.

Shanghai AOKAVI Industrial Co., Ltd. (AOKAVI)
PFA High-Purity Filter — a high-purity, all-fluoropolymer, high-retention filtration solution for wet electronic chemicals.