Glass Fiber Filter Membrane Discs, 0.5um, 25mm, Hydrophilic, Nonsterile, 100/Pk
GVS SKU: 1215544

Featuring a hydrophilic borosilicate glass fiber depth medium, these 25mm filter discs deliver fast, high-capacity prefiltration and sample clarification at a nominal 0.5um particle retention. The glass fibers are woven into a porous matrix and bonded with an acrylic resin, producing a depth structure with a large surface area that captures heavy particulate loads while maintaining low flow resistance. As a depth medium, glass fiber traps particles throughout its thickness rather than across a single screen surface, making it well suited to samples that would quickly blind a finer membrane.

Key Glass Fiber Media Characteristics

• Naturally hydrophilic: wets readily with water and aqueous solutions for spontaneous flow without pre-wetting.
• Nominal 0.5um particle retention: a depth-filtration rating where some particles near the stated size may pass, ideal for clarification rather than absolute screening.
• High particulate loading: the depth structure and large internal surface area provide outstanding dirt-holding capacity with low filter resistance.
• Acrylic resin binder: increases wet strength, reduces media migration, and provides the durability required for high-volume aqueous filtrations.
• Chemically robust and biologically inert: the borosilicate medium is autoclavable and highly resistant to oxidizing agents and weak acids.

Key Construction Characteristics

• Diameter: 25mm flat disc format for standard filter holders and funnels.
• Sterility: supplied nonsterile.
• Pack: 100 discs per pack.
• Media: borosilicate glass fiber with acrylic resin binder.

These discs provide reliable, repeatable performance when used alone for low-cost sample clarification or as a prefilter to extend the service life of a downstream final membrane. Their high loading capacity and fast flow help preserve sample integrity by removing bulk particulate quickly and consistently.

Color

White

Diameter

25mm

Material

Glass Fiber (GF)

Pack Count

100

Particle Retention

Nominal

Pore Size (µm)

0.5

Sterility

Nonsterile

Wettability

Hydrophilic

• Heavy Particulate Prefiltration Removes bulk particulate from heavily loaded samples to protect and extend the life of downstream final membranes.
• Sample Clarification Clarifies aqueous samples at low cost when used alone, delivering fast flow with high dirt-holding capacity.
• Environmental Sample Prep Handles turbid water and wastewater samples where high particulate loads would quickly blind a finer membrane.
• Protein and Culture Filtration Suited to filtration of proteinaceous solutions and water, algae, and bacteria culture matrices.
• High-Volume Aqueous Filtration The acrylic resin binder provides the wet strength needed for sustained, high-volume aqueous filtrations.
• Gravimetric and Suspended Solids Work Collects suspended solids for analysis using a high-capacity borosilicate depth medium.