Tisch
GF Syringe Filters w/ 3 Pre-Filters, 0.7 um, 25mm, Nonsterile, 100/Pk SKU: SF18298

Glass Fiber (GF) Syringe Filter - SF18298

Laboratories processing samples with moderate to heavy particulate loads face premature filter clogging that interrupts workflows and wastes valuable materials. The SF18298 solves this operational challenge with a 0.7 µm glass fiber membrane backed by three-stage GF+PP+GF prefiltration that progressively captures particles before they compromise the primary membrane. Your analytical operations benefit from extended filter life through depth filtration mechanics that distribute particle capture across multiple layers . The depth filter structure maintains consistent flow rates, making the 25mm configuration ideal for environmental testing and bioprocess monitoring.

Key Membrane Characteristics

• 0.7 µm glass fiber membrane with 3-stage prefilter delivers superior particle loading capacity through progressive multilayer filtration architecture
• A 4.08 cm² filtration area in the 25mm diameter configuration processes 50 ml throughput for moderate sample volumes
• Borosilicate glass microfiber construction resists aggressive chemicals, including strong acids, bases, and organic solvents, across diverse applications
• Hydrophilic surface properties facilitate immediate aqueous sample processing without requiring pre-wetting procedures in your workflows
• A 250-290 µm membrane thickness creates a depth filter structure that maintains flow rates as particulate loading increases during processing

Key Construction Characteristics

• Robust polypropylene housing maintains structural integrity under operating pressures up to 87 psi during extended filtration operations
• A 400 µL holdup volume accommodates the multilayer prefilter design while maintaining reasonable sample recovery for your applications
• Dual Luer-Lok/Luer Slip inlet and outlet connections provide compatibility with standard syringes and automated liquid handling equipment
• Autoclavable at 121°C for 30 minutes to support your in-house sterilization protocols when biological applications require it

Your clarification workflows gain reliability from the three-stage prefilter system that captures coarse particles progressively before final filtration at the 0.7 µm membrane. The multilayer approach extends operational life even with heavily particulate samples while maintaining consistent flow characteristics throughout processing runs. The 25mm format balances throughput capacity with manageable holdup volume while autoclavable construction offers flexibility for your sterilization protocols across pharmaceutical, environmental, and industrial testing applications.

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

Connection Type

Luer-Lok/Luer Slip

Construction

Polypropylene (PP)

Diameter

25mm

Filtration Area

4.08cm²

Flow Rate

250ml

Holdup Volume

400µl

Material

Glass Fiber (GF)

Maximum Operating Pressure

87psi

Maximum Operating Temperature (°C)

60°C

Membrane Thickness (µm)

250-290µm

Pack Count

100

Pore Size (µm)

0.7

Prefilter (Yes/No)

Yes

Prefilter Material

GF+PP+GF

Sterility

Nonsterile

Sterilization

Autoclave 121°C for 30min/ gamma 25kGy

Volume Throughput (ml)

50ml

Weight

0.70

Wetability

Hydrophilic

• Environmental Water Analysis - Process sediment-laden field samples before trace metal determination or organic extraction analysis
• Fermentation Broth Clarification - Remove cells and debris from bioreactor samples before HPLC or spectroscopic analysis in bioprocess monitoring
• Industrial Effluent Testing - Reduce suspended solids from wastewater samples before COD or heavy metal quantification analysis
• Agricultural Extract Processing - Filter plant tissue homogenates and soil extracts before pesticide residue or nutrient analysis
• Paint Quality Control - Clarify pigmented formulations to remove aggregates before rheology measurements or quality assurance testing
• Serum Sample Preparation - Remove cellular debris from biological fluids before immunoassays or protein quantification protocols