Tisch
Hydrophilic PTFE Syringe Filters, 0.45 um w/ GF PreFilter, 25mm, 100PK SKU: SF14471

Polytetrafluoroethylene (PTFE) Syringe Filters - SF14471

Featuring advanced hydrophilic PTFE membrane technology at 0.45μm pore size, combined with integrated glass fiber prefilter protection, engineered for high-dirt-load clarification applications where sample throughput and membrane longevity are essential. Surface-modified fluoropolymer chemistry eliminates pre-wetting requirements while delivering exceptional flow rates through dual-layer filtration architecture. Environmental monitoring, industrial process control, and viscous sample preparation applications demand robust filtration solutions that handle challenging particulate loads without membrane fouling or flow rate degradation. Construction specifications include 25mm diameter platform with 4.08cm² effective filtration area, polypropylene housing rated to 60°C operation, and glass fiber prefilter integration delivering 35ml rapid throughput with 100μL holdup volume optimization for medium-volume processing requirements.

Key PTFE Membrane Characteristics

• High-Performance 0.45μm Clarification - Removes interfering particles and debris while maintaining dissolved component passage for accurate analysis
• Hydrophilic Surface Engineering - Modified fluoropolymer eliminates alcohol pre-wetting procedures, enabling immediate aqueous sample processing
• Enhanced Chemical Resistance - Maintains compatibility with aggressive analytical solvents throughout extended filtration campaigns
• Low Protein Adsorption - Preserves proteins and biologics through minimal surface binding characteristics during sample processing
• 21.75psi Bubble Point Validation - Ensures consistent pore structure integrity and filtration performance across production batches

Key Construction Characteristics

• 100μL Holdup Volume - Preserves samples through optimized dead volume design, enabling maximum recovery of valuable analytical specimens
• Glass Fiber Prefilter Integration - Extends membrane operational life through high-capacity particulate removal before primary filtration
• 25mm High-Throughput Platform - 4.08cm² filtration area enables rapid processing of medium to large sample volumes up to 50ml capacity
• Universal Dual Luer System - Luer-Lok/Luer Slip compatibility provides a secure connection with all standard laboratory syringe configurations

Designed for your most challenging clarification requirements, this hydrophilic PTFE system delivers a safety margin through 87psi maximum operating pressure while providing rapid throughput at 35ml flow rates. Your laboratory operations benefit from extended membrane life through glass fiber prefilter protection, while the immediate sample compatibility and robust construction ensure reliable performance across demanding analytical workflows and high-particulate sample matrices.

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

Bubble Point (psi)

21.75psi

Connection Type

Luer-Lok/ Luer Slip

Construction

PP

Diameter

25mm

Filtration Area

4.08cm²

Flow Rate

35ml

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)

0.45

Prefilter (Yes/No)

Yes

Prefilter Material

GF

Sterility

NonSterile

Sterilization

Autoclave 121°C for 30min/ Gamma 25kGy

Volume Throughput (ml)

50ml

Wetability

Hydrophilic

• Environmental Water Analysis - Clarifies turbid environmental samples while protecting expensive analytical instrumentation from particulates
• Industrial Process Stream Monitoring - Removes suspended solids from manufacturing process samples before quality control analysis
• High-Particulate Biological Sample Prep - Pre-filters cell lysates and tissue homogenates containing high debris loads before downstream processing
• Paint and Coating Quality Control - Clarifies viscous formulations for particle size distribution analysis and contamination assessment
• Food and Beverage Production Testing - Filters high-solids samples for microbiological and chemical analysis in manufacturing environments
• Geological Sample Processing - Clarifies soil extracts and groundwater samples for trace metal and organic contaminant analysis