Tisch
GF Syringe Filters w/ 3 Pre-Filters, 0.45 um, 25mm, Sterile, 100/Pk SKU: SF18297

Glass Fiber (GF) Syringe Filters - SF18297

The SF18297 delivers exceptional particle loading capacity through its three-stage GF+PP+GF prefilter architecture that progressively captures suspended solids before they reach the primary 0.45 µm glass fiber membrane. This multilayer filtration system extends operational life when processing heavily particulate samples that would overwhelm conventional single-stage filters, maintaining consistent flow rates even as particle accumulation increases. Your sterile-ready laboratory operations benefit from this 25mm configuration that handles samples up to 50 ml while the borosilicate glass fiber construction resists aggressive chemicals across pharmaceutical testing, biotechnology research, and environmental analysis applications.

Key Membrane Characteristics

• 0.45 µm glass fiber membrane with 3-stage prefilter provides superior dirt-holding capacity through progressive particle capture architecture
• 4.08 cm² filtration area in the 25mm diameter processes 50 ml throughput for moderate-volume sample preparation needs
• Borosilicate glass microfiber construction delivers broad chemical compatibility across acids, bases, and organic solvents without contributing extractables
• Hydrophilic surface properties enable immediate aqueous sample processing without requiring pre-wetting steps in your protocols
• 250-290 µm membrane thickness creates a depth filtration structure that distributes particle capture throughout multiple layers

Key Construction Characteristics

• Durable polypropylene housing withstands operating pressures up to 87 psi for demanding filtration applications
• 400 µL holdup volume balances the multilayer prefilter design with reasonable sample recovery for your processing requirements
• Dual luer-lok/luer slip inlet and outlet connections accommodate standard laboratory syringes and automated dispensing systems
• Each filter arrives gamma-sterilized and individually packaged to maintain contamination-free conditions until use

Your clarification workflows gain efficiency from sterile-ready filters that eliminate preparation time while the three-stage prefilter system handles heavily particulate samples. The progressive filtration architecture captures coarse particles through multiple layers before final clarification, extending filter life and maintaining flow rates during extended processing operations. This 25mm format balances throughput capacity with manageable holdup volume while the broad chemical resistance supports diverse analytical applications requiring reliable particulate removal.

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

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)

0.45

Prefilter (Yes/No)

Yes

Prefilter Material

GF+PP+GF

Sterility

Sterile

Volume Throughput (ml)

50ml

Weight

0.88

Wetability

Hydrophilic

• Biological Fluid Clarification - Remove cellular debris from serum or plasma samples before immunoassays or protein measurements in clinical laboratories
• Environmental Sample Prep - Process turbid water samples containing sediment before ion chromatography or trace metal analysis in regulatory testing
• Fermentation Monitoring - Clarify bioreactor samples with high cell density before HPLC or spectroscopic analysis in bioprocess development workflows
• Tissue Culture Media - Filter complex media components containing particulates before dispensing into culture vessels in biomanufacturing operations
• Agricultural Extract Testing - Process plant homogenates and soil extracts before pesticide residue or nutrient quantification in food safety laboratories
• Industrial QC Analysis - Clarify viscous formulations and coating samples before rheology testing or quality control measurements in manufacturing facilities