GPFA

Summary

Product identification

The GPFA-Series High Purity All-Fluoropolymer Filter Cartridges are designed for superior chemical compatibility, temperature range, and ultra-low extractables, meeting the demanding needs of the micro-electronics industry. They are ideal for aggressive “wet-etch and clean” applications. The PTFE membrane provides high flow rates at low pressure drop, while the PFA-440HP hardware ensures superior chemical resistance and high temperature tolerance. Minimized ionic and TOC extractables are achieved through a specialized UPW flush process. A wet-packing option is available for ease of wetting in aqueous applications.

Construction Materials

• Filtration Media: PTFE
• Support Media: PFA
• End Caps: PFA440HP
• Center Core: PFA440HP
• Outer Support Cage: PFA440HP
• O-Rings: Teflon® Encapsulated Viton®

Operating limits

• Change Out ΔP (recommended): 35 PSID
• Temperature (max): 365˚F (185˚C)
• Differential Pressure (max): 60 PSID (4.1 bar) at 68˚F (20˚C)

Cleanliness

The Semiconductor Rinse (SR) option provides extraordinary product cleanliness with typical levels:

• Metals Extractable: < 20 ppb total
• Particulate Extractable:
  • ≤ 2 counts/ml at ≥ 0.2µ
  • ≤ 1 count/ml at ≥ 1.0µ
• TOC Extractable: below detection limits

Mechanical / hydraulic

• Length: 5 to 40 inches (12.7 to 101.6 cm) nominal
• Outside Diameter: 2.68 inches (6.8 cm) nominal

Flow Rate vs Pressure Drop: Performance data for flow rate versus pressure drop is available for GPFA-Series Pleated All-Fluoropolymer PTFE/PFA cartridges. See the official PDF for exact tabulated values.

Typical Applications

• Highly Reactive Chemicals:
  • Acetic Acid (10%)
  • Hydrofluoric Acid (50%)
  • Hydrogen Peroxide (30%)
  • Nitric Acid (conc.)
  • Phosphoric Acid (conc.)
  • Sulfuric Acid (conc.)
  • Ammonium Hydroxide (conc.)
  • Potassium Hydroxide (conc.)
  • Sodium Hydroxide (conc.)
  • TMAH (5%)
  • Aqua Regia (HNO₃:HCl)
  • BOE; NH₄F:HF
  • Mixed Acid Etch
  • ChromPhos Etch
  • Piranha Etch

Ordering Information

• Rating (µ): 0.05, 0.1, 0.2, 0.45, 1.0, 5.0, 10.0
• Length: 5” (12.7 cm), 10” (25.4 cm), 20” (50.8 cm), 30” (76.2 cm), 40” (101.6 cm)
• End Cap Style:
  • 3 = 222 w/Fin
  • 4 = 222 w/Flat Cap
  • 6 = 226 w/Flat Cap
  • 7 = 226 w/Fin
  • 24 = 222 w/Hat Cap
• O-Rings:
  • T = Teflon® Encapsulated Viton®
• Options:
  • SR = Semiconductor Rinse
  • W = Wet Packed

Disclaimer: This summary is based on extracted text and may not include all figures, footnotes, or the latest revisions. Contractual data for any project must match the OEM PDF revision used on that project.

Official datasheet (PDF)

Lenntech datasheet mirror