Glass Fiber Filter Paper Discs, 1.5um, 70mm, Binder-Free, Nonsterile, 100/Pk
GVS SKU: FP070DFAAHGLFC01

Featuring a binder-free borosilicate glass microfiber depth medium, these 70mm filter paper discs provide 1.5um nominal particle retention with the high loading capacity and fast flow characteristic of a glass fiber depth filter. The hydrophilic structure draws aqueous samples readily, while the open depth matrix captures particulate throughout the media rather than only at the surface, making it well suited to heavily loaded samples. Supplied as Grade DFAAH discs in a pack of 100.

Key Glass Fiber Media Characteristics

• Hydrophilic borosilicate depth medium wets readily with aqueous samples and provides 1.5um nominal particle retention.
• Binder-free construction avoids binder extractables, supporting gravimetric and solvent filtration work.
• High particulate loading capacity from the depth structure captures particles throughout the media for sustained flow under heavy solids loads.
• Biologically inert and resistant to oxidizing agents and weak acids, with autoclavable borosilicate construction.
• Low filter resistance delivers rapid flow rates relative to screen membranes of comparable retention.

Key Construction Characteristics

• Material: 100% borosilicate glass microfiber, binder-free.
• Format: 70mm diameter plain disc.
• Grade: DFAAH.
• Sterility: Nonsterile.
• Pack: 100 discs per pack.

The depth-loading borosilicate medium maintains consistent flow while removing fine particulate, helping protect downstream membranes and preserve sample integrity. Its binder-free, biologically inert composition supports reproducible results across gravimetric analysis, water and wastewater testing, and general laboratory clarification.

Color

White

Diameter

70mm

Grade

DFAAH

Material

Glass Fiber (GF)

Mesh Format

Circle

Pack Count

100

Particle Retention

1.5 um (nominal)

Pore Size (µm)

1.5

Sterility

Nonsterile

Wettability

Hydrophilic

• Total Suspended Solids Analysis The binder-free borosilicate medium supports gravimetric determination of suspended solids in water and wastewater without binder extractables.
• Wastewater and Water Testing The 1.5um nominal retention captures suspended particulate for routine environmental sample preparation and monitoring.
• Sample Prefiltration The high loading depth structure clarifies heavily loaded samples and protects finer downstream membranes from premature clogging.
• Atmospheric Pollution Control The depth medium collects fine airborne particulate for pollution monitoring and air sampling.
• Cell Culture Clarification The hydrophilic glass fiber media is suitable for clarification steps in cellular culture workflows.
• General Laboratory Clarification The fast-flowing, high-capacity disc provides low-cost clarification of particulate-laden aqueous samples.