GD/X 25mm Syringe Filter, Glass Microfiber GF/F Filteration Medium, 0.7um (1500 pcs)
Whatman SKU: 6891-2507

Whatman GD/X Glass Fiber (GF) Syringe Filters, 0.7 µm, 25 mm, 150/Pk - 6891-2507

Whatman applies over a century of filtration media expertise, manufacturing under the quality standards that established its products as global laboratory references. Syringe filters give the analyst a single-use device for clarifying samples right at the bench. Glass fiber draws aqueous samples through without preconditioning and holds structural integrity through conditioning cycles. Polypropylene construction maintains housing integrity through the filtration run while contributing minimal extractables to the filtrate and resists aqueous acids, bases, and alcohols. Where small-volume samples must reach the instrument clean, syringe filtration clears particulates in a single pass.

Technical Specifications

• Naturally hydrophilic surface wets rapidly with aqueous samples
• Biologically inert borosilicate fiber with broad chemical compatibility
• Withstands high-temperature pre-conditioning up to 500°C
• Nominal depth retention with high dirt-loading capacity
• Inorganic construction suits demanding sample-preparation chemistries

Housing Specifications

• Inert polyolefin wall contributes minimal sample adsorption to the filtrate
• Plasticizer-free polyolefin construction keeps the fluid path clean
• Tough polypropylene body tolerates repeated handling at the bench
• Optimized internal geometry minimizes backpressure in service

Filtering buffers, reagents, and aqueous samples keeps your preparation moving and consistent. General-purpose aqueous filtration supports the sample types you handle every day across your water-analysis and general analytical workflows. Ask our friendly customer service team to confirm the pore size, membrane, and sterility options your filtration application calls for.

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

Connection Type

Luer-Lok/ Luer Slip

Construction

Glass Microfiber (Binder Free)

Diameter

25mm

Filtration Area

4.91cm²

Flow Rate

Fast

Material

Glass Micro Fiber

Maximum Operating Temperature (°C)

550°C

Membrane Thickness (µm)

420µm

Pack Count

150

Pore Size (µm)

0.7

Prefilter (Yes/No)

No

Sterility

Nonsterile

Sterilization

Autoclavable 500°C

Volume Throughput (ml)

Up to 100ml

Wettability

Hydrophilic

• Biological Fluid Analysis - Protects sensitive downstream instruments from filtering contaminants that can cause system failure
• Analytical Sample Prep - Optimized to ensure data integrity by effectively filtering contaminants before instrumental analysis
• Sample Clarification - Optimizing sample clarity via rapid filtering of contaminants to maintain high throughput in busy laboratories
• Particulate Removal - Designed for filtering contaminants, this filter aids in optimizing sample clarity across diverse sample types
• Research & Development - Supports protocols that need to filter contaminants, providing the ability to optimize sample clarity
• Environmental Monitoring - Ideal for filtering pollutants in water and wastewater analysis to ensure regulatory compliance