Grade F Glass Fiber Filter Paper, 0.7um, 37mm, Nonsterile, 100/Pk SKU: EF19065

Glass Fiber (GF) Filter Paper - EF19065

Analytical methods specifying glass microfiber collection media require filters manufactured to consistent retention and purity specifications across production lots. Binderless construction eliminates organic and resin-based additives that would contribute background contamination to sensitive downstream analytical methods. In practice, lot-level verification of retention, thickness, and ash content ensures predictable performance when scaling from method development to routine analysis.

Key Filter Paper Characteristics

• Inorganic glass matrix withstands temperatures exceeding 500 degrees C, supporting ignition-based gravimetric methods without filter decomposition.
• High void volume within the randomly oriented fiber matrix sustains flow rates through heavy particulate loads that would blind surface-capture filters.
• Manufactured to a basis weight of 75g/m², each filter delivers the documented mass consistency that gravimetric methods require.
• Chemically inert glass composition withstands acids, bases, and organic solvents across the full pH range without fiber degradation.
• Nominal retention ratings defined by fiber diameter and packing density provide consistent particle capture across production lots.

Scaling your method from development to routine production requires paper consistency at every lot, and the specifications above provide that assurance. With this in mind, ultra-low blank values from pure borosilicate glass protect the accuracy of your trace-level environmental and gravimetric determinations. Take control of your sample preparation variables and ensure that your data reflects the true nature of your work, rather than the quality of your consumables.

Capacity

7mL

Diameter

37mm

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

0.23

Wettability

Hydrophobic

• Turbid Sample Processing - High loading capacity filters heavily particulate environmental and industrial samples without premature clogging.
• Membrane Prefiltration - Removes coarse debris from turbid samples before downstream membrane analysis to prevent premature blinding.
• Radioimmunoassay Harvesting - Binderless construction eliminates chemical interference during harvesting of bound radioactive tracers.
• 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.
• Chlorophyll Extraction - Concentrates algal cells from water column samples for chlorophyll measurement in aquatic quality assessment.