GD/X 25mm Syringe Filter, 934-AH Filteration Medium, 1.5 um (150 pcs)
Whatman SKU: 6892-2515

Whatman GD/X Glass Fiber (GF) Syringe Filters, 1.5 µm, 25 mm, 150/Pk - 6892-2515

Whatman stages multiple glass fiber layers inside the GD/X cartridge to intercept particles in progressive steps, leaving only the smallest fraction to reach the tightly rated final membrane. A syringe filter's small hold-up volume limits sample loss, a meaningful difference when working with a limited or precious sample. Glass fiber draws aqueous samples through without preconditioning and offers broad chemical compatibility. The polypropylene housing keeps the sample chemically unaltered across the pass and maintains structural integrity through elevated-temperature sample preparation. For routine sample preparation across many methods, each analytical run starts with a consistent, particle-free sample without added hardware or a cleaning step.

Membrane Characteristics

• Autoclave steam sterilization at 121°C leaves structural integrity intact
• High internal surface area supports broad particle interception throughout fiber depth
• Biologically inert borosilicate fiber with broad chemical compatibility
• Depth-filtration mechanism captures particles throughout the fiber matrix, not at the surface
• Fiber matrix sustains throughput as particulate load builds within the filter depth

Housing Characteristics

• PP housing rated to 121°C holds its geometry through high-temperature sample preparation and processing.
• Plasticizer-free polyolefin construction keeps the fluid path clean
• Inert polyolefin wall contributes minimal sample adsorption to the filtrate
• Minimal ionic background from the polypropylene housing supports ion chromatography and trace-metal ICP-MS sample preparation.

A clean particulate separation keeps your aqueous sample preparation dependable. Consistent aqueous clarification clears particulates without slowing your bench routine the same way every time you run it. Ask about Whatman's quality documentation to confirm your filtration step meets a recognized laboratory-science standard.

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 Microfiber (934-AH)

Membrane Thickness (µm)

435µm

Pack Count

150

Pore Size (µm)

1.5

Prefilter (Yes/No)

No

Sterility

Nonsterile

Sterilization

Autoclavable 500°C

Volume Throughput (ml)

Up to 100ml

Wettability

Hydrophilic

• Downstream Purification - Reduces turbidity in fermentation broth ahead of capture chromatography, protecting resin binding capacity and column life.
• Wastewater Effluent Prep - Glass fiber removes suspended solids from industrial effluent ahead of COD, BOD, and nutrient compliance analysis.
• Cannabis Extract Analysis - Glass fiber removes lipid and plant wax particulates from cannabis extracts ahead of cannabinoid potency testing.
• Coatings Quality Testing - Glass fiber's chemical inertness handles viscous, solvent-laden coating formulations without swelling or degrading.
• Botanical Extract Prep - Glass fiber removes plant cell wall debris from botanical extracts ahead of active constituent and contaminant analysis.
• Crude Oil Prep - Glass fiber removes wax and asphaltene particulates from crude oil samples ahead of elemental and composition analysis.