Glass Fiber Filter Discs, 1.5um, 25mm, Binder-Free, Nonsterile, 100/Pk
GVS SKU: FP025DFAAHGLFC01

Featuring a 100% borosilicate glass fiber depth medium, these 25mm filter discs deliver 1.5um nominal particle retention without any added binder. The naturally hydrophilic, binder-free structure provides a large internal surface area that captures fine particulates throughout the depth of the medium, combining high dirt-holding capacity with fast flow and low resistance. Supplied 100 per pack.

Key Glass Fiber Media Characteristics

• Binder-free borosilicate construction avoids binder extractables, making the medium well suited to solvent filtration and gravimetric analysis.
• Naturally hydrophilic for fast, even wetting of aqueous samples with no pre-wetting agents required.
• 1.5um nominal retention as a depth medium rather than an absolute pore size, retaining fine particles down through the fiber matrix.
• High particulate loading capacity from the open depth structure, ideal for heavily loaded or hard-to-filter samples.
• Biologically inert and chemically resistant to most solvents and reagents, with broad thermal tolerance.

Key Construction Characteristics

• Diameter: 25mm circle format.
• Nominal thickness: 0.26mm.
• Sterility: Nonsterile.
• Pack: 100 discs per box.

The depth-filtration structure maintains consistent flow as the medium loads, protecting downstream membranes and analytical instruments from particulate fouling. The binder-free borosilicate composition preserves sample integrity by minimizing extractable interference, supporting reliable, reproducible results across clarification and prefiltration workflows.

Diameter

25mm

Grade

GF6

Material

Glass Fiber (GF)

Mesh Format

Circle

Nominal Thickness (µm)

260

Pack Count

100

Particle Retention

1.5

Pore Size (µm)

1.5

Prefilter (Yes/No)

Yes

Sterility

Nonsterile

Wettability

Hydrophilic

Whatman Equivalent

934-AH

• Sample Prefiltration Protects fine membranes and downstream instrumentation by removing bulk particulates from heavily loaded samples.
• Suspended Solids Analysis Captures fine suspended solids from water and industrial wastes for gravimetric measurement.
• HPLC and GC Sample Prep Clarifies samples and solvents prior to chromatographic analysis to prevent column fouling.
• Protein and Precipitate Clarification Removes finely precipitated proteins and particulates from biochemical solutions.
• Environmental Monitoring Supports water and air pollution sample preparation where high loading capacity is needed.
• Cell and Culture Filtration Filters algae and bacterial cultures where fast flow and high capacity are required.