Glass Fiber Filter Discs, Binderless, 0.7um, 25mm, Nonsterile, 100/Pk
GVS SKU: 1215162

Featuring a hydrophilic borosilicate glass fiber depth medium, these 25mm binderless filter discs deliver fast-flowing clarification and prefiltration with a 0.7um nominal particle retention. Composed of borosilicate glass fibers woven into a porous matrix without bonding resin, the binderless construction avoids binder extractables, making these discs well suited to solvent filtration and gravimetric analysis. The depth structure provides outstanding particulate loading capacity while maintaining high flow, and the media is biologically inert, autoclavable, and highly resistant to oxidizing agents and weak acids.

Key Glass Fiber Media Characteristics

• Hydrophilic borosilicate depth medium with a 0.7um nominal particle retention rating rather than an absolute pore size.
• Binderless construction woven from borosilicate glass fibers without bonding resin, eliminating binder extractables during solvent filtration and gravimetric work.
• High particulate loading capacity from the depth structure, ideal for heavily loaded samples and protecting downstream membranes.
• Biologically inert and autoclavable, with high resistance to oxidizing agents and weak acids.
• Fine retention with fast flow, supporting rapid clarification and analytical determinations.

Key Construction Characteristics

• Diameter: 25mm disc format.
• Nominal retention: 0.7um.
• Sterility: Nonsterile.
• Pack: 100 discs per pack.

These binderless glass fiber discs maintain consistent retention and throughput to support reproducible sample preparation. The inert, extractable-free borosilicate medium helps preserve sample integrity in gravimetric and analytical determinations. Their high loading capacity makes them a dependable choice for clarifying difficult, heavily loaded samples.

Color

White

Diameter

25mm

Grade

Binderless

Material

Glass Fiber (GF)

Membrane Brand

PreSep

Pack Count

100

Pore Size (µm)

0.7

Sterility

Nonsterile

Wettability

Hydrophilic

• Gravimetric Analysis The binderless borosilicate medium avoids binder extractables, supporting accurate gravimetric and analytical determinations.
• Solvent Filtration Inert glass fiber construction resists oxidizing agents and weak acids for clarification of solvent-based samples.
• Sample Clarification Hydrophilic depth media provide low-cost clarification of aqueous and analytical samples.
• Prefiltration High particulate loading capacity protects and extends the life of downstream final membranes.
• Environmental Monitoring Suited to water and air pollution monitoring where suspended solids must be captured efficiently.
• Suspended Solids Analysis Fine retention with fast flow supports collection of suspended solids from water and industrial samples.