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

Polytetrafluoroethylene (PTFE) Syringe Filters - SF18302

When you're filtering turbid samples with high particulate loads, you need bacterial removal without premature membrane clogging. 0.22µm hydrophilic PTFE filters combine sterile-grade filtration 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 challenging samples, and hydrophilic surface treatment means you can process aqueous samples immediately without pre-wetting. With 100µL holdup volume, you balance sample recovery with practical handling.

Key PTFE Membrane Characteristics

• 0.22µm pore size removes bacteria with 43.51psi bubble point specification for sterile-grade filtration
• Hydrophilic surface modification eliminates pre-wetting requirements for immediate aqueous sample processing
• Broad chemical compatibility withstands aggressive solvents across diverse laboratory applications
• Low protein binding minimizes sample loss when filtering biological solutions and protein samples
• Membrane thickness of 80-140µm provides structural durability for high-particulate sample processing

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 0.22µm membrane. Process up to 50ml of high-particulate samples efficiently, and the 87psi burst pressure handles typical laboratory workflows. The 43.51psi bubble point confirms consistent 0.22µm pore structure for reproducible bacterial removal across your sterile filtration runs.

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

Weight

0.52

Wetability

Hydrophilic

• Environmental Water Analysis - Filters turbid environmental samples containing high suspended solids for microbiological testing and analysis
• Industrial Process Monitoring - Removes bacteria from manufacturing samples with high particulate loads for quality control testing procedures
• Cell Culture Harvest Processing - Filters cell culture broths containing cellular debris while removing bacteria for downstream bioprocessing
• Fermentation Broth Processing - Removes bacteria from biotechnology samples with high particulate content in bioprocess development workflows
• Wastewater Analysis - Removes bacteria from 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 and compliance testing