Tisch
Hydrophilic PTFE Syringe Filters w/ 3 Pre-Filters, 0.45 um, 25mm, 100 /Pk SKU: SF18303

Polytetrafluoroethylene (PTFE) Syringe Filters - SF18303

When you're filtering turbid samples with high particulate loads, you need extended membrane life without frequent replacements. 0.45µm hydrophilic PTFE filters combine clarification with triple-stage prefiltration - two glass fiber layers plus polypropylene protection capture large particles before they reach the membrane. The 25mm diameter with 4.08cm² filtration area handles up to 50ml of particulate-laden samples, and hydrophilic surface treatment processes aqueous samples immediately without pre-wetting. With 100µL holdup volume, you balance sample recovery with practical handling for medium-volume processing.

Key PTFE Membrane Characteristics

• 0.45µm pore size removes particles while preserving dissolved analytes for analytical measurements
• Hydrophilic surface modification eliminates pre-wetting requirements for immediate aqueous sample processing
• Broad chemical compatibility withstands analytical solvents across diverse laboratory applications
• Low protein binding minimizes sample loss when filtering biological solutions and protein samples
• 21.75psi bubble point specification confirms consistent 0.45µm pore structure across production batches

Key Construction Characteristics

• 100µL holdup volume balances sample recovery with practical handling for medium-volume processing
• Triple-stage prefilter system combines dual glass fiber layers with polypropylene protection for high dirt-loading capacity
• 25mm diameter with 4.08cm² filtration area processes particulate-laden samples up to 50ml without premature fouling
• Luer-Lok/Luer Slip dual connection accommodates all standard laboratory syringe configurations

You can autoclave these filters at 121°C for 30 minutes when your protocols require pre-sterilization before use. The triple prefilter system extends membrane life when you're processing turbid or particulate-laden samples by capturing large particles before they reach the 0.45µm membrane. Process up to 50ml of high-particulate samples efficiently, and the 87psi burst pressure handles typical laboratory workflows. The 21.75psi bubble point confirms consistent 0.45µm pore structure for reproducible particle removal across your clarification runs.

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+GF+PP

Sterility

NonSterile

Sterilization

Autoclave 121°C for 30min/ Gamma 25kGy

Volume Throughput (ml)

50ml

Weight

0.52

Wetability

Hydrophilic

• Environmental Water Clarification - Filters turbid environmental samples containing high suspended solids for trace contaminant analysis
• Industrial Process Monitoring - Clarifies manufacturing samples with high particulate loads for quality control testing and analysis procedures
• High-Particulate Biological Samples - Processes cell culture broths and fermentation samples containing debris for downstream analytical testing
• Paint and Coating Analysis - Clarifies viscous high-solids formulations for particle size distribution and contamination assessment
• Food and Beverage Testing - Filters turbid production samples for microbiological and chemical analysis in manufacturing quality control
• Wastewater Sample Preparation - Clarifies high-solids samples for analytical testing and contamination monitoring in wastewater treatment