Grade B Glass Fiber Filter Paper 1.0um, 25mm, Nonsterile, 50/Pk SKU: EF19022

Glass Fiber (GF) Filter Paper - EF19022

Vacuum filtration of turbid environmental samples requires a depth filter that maintains flow rates through heavy particulate loads without premature blinding. Chemically inert borosilicate glass resists degradation across the full pH range, maintaining fiber integrity through acid and alkaline sample matrices. Each sheet reflects production standards where fiber density, thickness, and retention characteristics are verified before lot release.

Key Filter Paper Characteristics

• Borosilicate glass microfiber depth structure provides high particle loading capacity with flow rates significantly faster than cellulose papers of equivalent retention.
• Chemically inert glass composition withstands acids, bases, and organic solvents across the full pH range without fiber degradation.
• Hydrophilic glass fiber wets spontaneously on contact with aqueous solutions, eliminating pre-wetting steps required by hydrophobic filter media.
• High void volume between randomly packed fibers sustains rapid flow rates even as accumulated particulate loading increases during filtration.
• Binderless glass fiber matrix eliminates organic extractables that would interfere with downstream chromatographic or spectroscopic determinations.

When your application makes the filter paper part of the measurement, the ash and weight specifications above define its analytical contribution. With this in mind, chemical inertness across the full pH range means this filter handles the same aggressive sample matrices your analytical membranes process. Make the decision for consistency and reliability, ensuring that your laboratory maintains its reputation for high-quality, error-free output.

Capacity

1.5mL

Diameter

25mm

Folded/ Fluted/ Pleated

No

Grade

B

Material

Glass Fiber (GF)

Nominal Basis Weight (g/ m²)

143g/m²

Pack Count

50

Particle Retention

1.0um

Pore Size (µm)

1

Sterility

Nonsterile

Weight

0.12

Wettability

Hydrophobic

• Scintillation Counting - Binderless glass fiber provides the chemically clean substrate liquid scintillation counting methods require.
• Radioimmunoassay Harvesting - Binderless construction eliminates chemical interference during harvesting of bound radioactive tracers.
• Protein Precipitation - Captures precipitated proteins from biological fluids for downstream immunoassay and biochemical characterization.
• Chlorophyll Extraction - Concentrates algal cells from water column samples for chlorophyll measurement in aquatic quality assessment.
• Air Particulate Sampling - Captures airborne particulates by vacuum filtration for gravimetric mass determination and subsequent analysis.
• Biological Clarification - Clears cell culture harvests and biological lysates of particulate debris before chromatographic purification.