Glass Fiber Filter Discs, 1.2um, 70mm, Binder-Free, Nonsterile, 100/Pk
GVS SKU: FP070DMEFCGLFC01

Featuring a binder-free borosilicate glass microfiber depth medium, these 70mm filter discs deliver 1.2um nominal particle retention with a measured media thickness of 0.26mm. The naturally hydrophilic, binder-free construction avoids organic binder extractables, making the discs well suited to solvent filtration, gravimetric analysis, and protecting downstream membranes during heavily loaded filtrations. Each pack contains 100 nonsterile discs.

Key Glass Fiber Media Characteristics

• Naturally hydrophilic borosilicate glass microfiber that wets out readily with aqueous samples.
• 1.2um nominal particle retention rather than an absolute pore rating, characteristic of a depth medium.
• Open depth structure with high surface area provides outstanding particulate loading capacity combined with low filter resistance.
• Binder-free composition avoids organic binder extractables for cleaner gravimetric and analytical results.
• Biologically inert borosilicate matrix that is highly resistant to oxidizing agents and weak acids.

Key Construction Characteristics

• Material: 100% borosilicate glass microfiber, binder-free.
• Diameter: 70mm disc format.
• Nominal media thickness: 0.26mm (260um).
• Sterility: nonsterile.
• Supplied 100 discs per pack.

The depth-loading structure captures fine and coarse particulates throughout the medium, maintaining flow even as solids accumulate. This combination of fine retention and high holding capacity protects more expensive downstream membranes and supports reliable, repeatable sample preparation across analytical workflows.

Diameter

70mm

Grade

DMEFC

Material

Glass Fiber (GF)

Membrane Thickness (µm)

260

Nominal Thickness (µm)

260

Pack Count

100

Particle Retention

1.2

Pore Size (µm)

1.2

Prefilter (Yes/No)

Yes

Sterility

Nonsterile

Wettability

Hydrophilic

Whatman Equivalent

Grade GF/C

• Prefiltration of Loaded Samples Captures coarse and fine particulates throughout the depth medium to protect and extend the life of downstream membranes.
• Total Suspended Solids Analysis The 1.2um nominal retention supports suspended solids determination in potable water and wastewater.
• Gravimetric Analysis Binder-free borosilicate construction minimizes extractables for clean gravimetric and analytical determinations.
• Environmental Sample Preparation Suited to water and air pollution monitoring where high particulate loading is encountered.
• Cell Harvesting and Culture Filtration Filters algae, bacteria cultures, and suspended cells with good flow and loading capacity.
• Aqueous Clarification Provides low-cost clarification of heavily loaded aqueous samples ahead of further analysis.