Tisch
Hydrophilic PTFE Syringe Filters w/ 3 Pre-Filters, 0.22 um, 25mm, 100 /Pk SKU: SF18302

Polytetrafluoroethylene (PTFE) Syringe Filters - SF18302

Advanced 0.22μm PTFE membrane technology with hydrophilic surface modification delivers absolute bacterial retention through validated 43.51psi bubble point specifications, ensuring complete sterile filtration performance for high-particulate applications. Triple-stage prefilter architecture combining dual glass fiber layers with polypropylene protection provides 25mm platform with 4.08cm² filtration area optimized for challenging sample matrices up to 50ml capacity. High-particulate sterile filtration applications in environmental monitoring, industrial process control, and turbid biological samples demand filtration solutions that prevent membrane fouling while maintaining bacterial removal capabilities. Quality validation protocols confirm membrane integrity through rigorous bubble point testing ensuring absolute 0.22μm retention, while 100μL holdup volume specifications balance sample recovery with processing efficiency, and triple prefilter system delivers exceptional dirt-loading capacity extending operational life through 18ml flow rates across extended filtration campaigns.

Key PTFE Membrane Characteristics

• Validated 0.22μm Bacterial Retention - Delivers absolute sterile filtration with 43.51psi bubble point validation for critical aseptic applications
• Hydrophilic Surface Engineering - Modified fluoropolymer technology eliminates pre-wetting requirements, enabling immediate aqueous sample processing
• Chemical Stability Platform - Resists aggressive solvents and maintains membrane integrity with documented incompatibilities for operational safety
• Low Protein Binding Characteristics - Maintains concentration of biologics and therapeutic proteins through minimal surface adsorption
• Engineered Membrane Depth - 80-140μm thickness provides structural durability while maintaining efficient flow performance

Key Construction Characteristics

• 100μL Holdup Volume - Preserves samples through optimized dead volume design, enabling maximum recovery of valuable analytical specimens
• Triple-Stage Prefilter Architecture - Dual glass fiber layers plus polypropylene protection provide exceptional particulate capacity for challenging samples
• 25mm Extended-Life Platform - 4.08cm² filtration area enables processing of high-particulate samples up to 50ml without premature fouling
• Universal Dual Luer System - Luer-Lok/Luer Slip compatibility ensures secure connection with all standard laboratory syringe configurations

Designed for your most challenging high-particulate sterile filtration requirements, this hydrophilic PTFE system combines quality assurance through 87psi structural integrity with validated bacterial retention capabilities. Your laboratory achieves extended processing campaigns through triple prefilter protection, preventing premature membrane fouling, while the optimized holdup design ensures maximum sample recovery across demanding applications where high dirt-loading capacity and absolute bacterial removal are simultaneously critical operational requirements.

For more information about chemical and material compatibility, please review our Chemical Compatibility Chart.

Bubble Point (psi)

43.51psi

Connection Type

Luer-Lok/ Luer Slip

Construction

PP

Diameter

25mm

Filtration Area

4.08cm²

Flow Rate

18ml

Holdup Volume

100μL

Material

Polytetrafluoroethylene (PTFE)

Maximum Operating Pressure

87psi

Maximum Operating Temperature (°C)

60°C

Membrane Thickness (µm)

80-140μm

Pack Count

100

Pore Size (µm)

0.22

Prefilter (Yes/No)

Yes

Prefilter Material

GF+GF+PP

Sterility

NonSterile

Sterilization

Autoclave 121°C for 30min/ Gamma 25kGy

Volume Throughput (ml)

50ml

Wetability

Hydrophilic

• Environmental Water Sterilization - Filters turbid environmental samples containing high suspended solids for microbiological analysis
• Industrial Process Stream Monitoring - Sterilizes manufacturing samples with high particulate loads for quality control testing procedures
• Cell Culture Harvest Processing - Filters cell culture broths containing cellular debris while maintaining sterility for downstream processing
• Fermentation Broth Sterilization - Processes biotechnology samples with high particulate content, requiring bacterial removal and clarification
• Wastewater Analysis - Sterilizes high-solids samples for microbiological testing and contamination assessment in treatment facilities
• Food and Beverage Production - Filters turbid production samples for sterility testing in manufacturing quality control operations