Tisch
GF Syringe Filters w/ 3 Pre-Filters, 1.2 um, 25mm, Nonsterile, 100/Pk SKU: SF18299

Glass Fiber (GF) Syringe Filters - SF18299

Pharmaceutical, biotechnology, and industrial laboratories require prefiltration solutions that handle viscous fluids and high-solids samples without premature clogging or backpressure buildup. The SF18299 meets these demanding industry requirements with a 1.2 µm glass fiber membrane backed by three-stage GF+PP+GF prefiltration architecture that processes three to seven times more sample volume than standard single-membrane filters. Your operations benefit from this 25mm design approach that combines progressive particle capture with depth filtration mechanics, delivering exceptional loading capacity and fast flow rates across environmental testing, bioprocess monitoring, and manufacturing quality control applications.

Key Membrane Characteristics

• 1.2 µm glass fiber membrane with 3-stage prefilter provides exceptional dirt-holding capacity through progressive multilayer filtration architecture
• 4.08 cm² filtration area in the 25mm diameter configuration processes 50 ml throughput for moderate-volume sample preparation
• Borosilicate glass microfiber construction delivers broad chemical compatibility across acids, bases, and organic solvents without contributing extractables
• Hydrophilic surface characteristics enable immediate aqueous sample processing without requiring pre-wetting steps in your protocols
• 250-290 µm membrane thickness creates a depth filter structure that maintains flow rates as particulate loading accumulates during processing

Key Construction Characteristics

• Robust polypropylene housing maintains integrity under operating pressures up to 87 psi during extended filtration operations
• 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 fit standard laboratory 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

Quality assurance comes from the three-stage prefilter system that prevents membrane blocking and backpressure buildup even with challenging sample matrices. Your prefiltration workflows benefit from processing capacity that exceeds standard filters by three to seven times while maintaining fast flow rates throughout extended operations. The 25mm format balances throughput with manageable holdup volume while broad chemical resistance supports diverse applications where viscous samples and high solids content demand exceptional particle loading capacity.

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)

1.2

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

• Viscous Sample Processing - Filter polymer solutions and coating formulations containing suspended solids before rheology testing or quality control analysis
• Environmental Water Testing - Process sediment-laden field samples before trace metal or organic contaminant determination in regulatory laboratories
• Fermentation Broth Clarification - Remove cells and debris from high-cell-density bioreactor samples before HPLC or spectroscopic measurements
• Industrial Fluid Analysis - Clarify hydraulic oils and coolants with high particulate loads before contamination analysis in manufacturing facilities
• Agricultural Extract Prep - Filter plant homogenates and soil extracts containing suspended solids before pesticide or nutrient quantification
• Biological Fluid Processing - Remove cellular debris from serum or tissue homogenates before immunoassays or protein measurements in laboratories