Grade F Glass Fiber Filter Paper, 0.7um, 21mm, Nonsterile, 100/Pk SKU: EF19072

Glass Fiber (GF) Filter Paper - EF19072

Air particulate sampling for gravimetric mass determination demands a filter medium with low tare weight variability and thermal stability through weighing procedures. Grade-specific fiber diameter and packing density produce defined retention ratings that remain consistent across manufacturing lots. In sum, standardized manufacturing protocols produce papers with retention and flow characteristics that remain constant from the first batch to the last.

Key Filter Paper Characteristics

• Randomly oriented glass microfibers create a depth structure that captures particles throughout the matrix, not just at the surface.
• Nominal retention ratings defined by fiber diameter and packing density provide consistent particle capture across production lots.
• Thermal stability exceeding 500 degrees C supports ignition-based gravimetric methods without filter decomposition or residue artifacts.
• Borosilicate glass microfiber construction provides depth filtration with loading capacity far exceeding cellulose papers of equivalent retention.
• Inorganic glass matrix withstands temperatures exceeding 500 degrees C, supporting ignition-based gravimetric methods without filter decomposition.

Whether your method requires simple clarification or precise gravimetric determination, the documented specifications above define what this paper delivers. High void volume within the fiber matrix extends the sample volume you can process before flow restriction requires a filter change. Make the decision for consistency and reliability, ensuring that your laboratory maintains its reputation for high-quality, error-free output.

Capacity

7mL

Diameter

21mm

Folded/ Fluted/ Pleated

No

Grade

F

Material

Glass Fiber (GF)

Nominal Basis Weight (g/ m²)

75g/m²

Pack Count

100

Particle Retention

0.7um

Pore Size (µm)

0.7

Sterility

Nonsterile

Weight

0.12

Wettability

Hydrophobic

• Chlorophyll Extraction - Concentrates algal cells from water column samples for chlorophyll measurement in aquatic quality assessment.
• Stack Emissions Testing - High temperature tolerance supports gravimetric particulate determination from industrial emission source sampling.
• Water Quality Monitoring - Collects suspended solids from environmental water samples for regulatory compliance and watershed assessment.
• Biological Clarification - Clears cell culture harvests and biological lysates of particulate debris before chromatographic purification.
• Membrane Prefiltration - Removes coarse debris from turbid samples before downstream membrane analysis to prevent premature blinding.
• Gravimetric Air Monitoring - Thermal stability supports ignition-based mass determination of collected airborne particulate samples.