Grade A Glass Fiber Filter Paper 1.6um, 21mm, Nonsterile, 100/Pk SKU: EF19004

Glass Fiber (GF) Filter Paper - EF19004

Analytical methods specifying glass microfiber collection media require filters manufactured to consistent retention and purity specifications across production lots. Randomly oriented borosilicate glass microfibers create a depth filtration matrix that captures particles throughout its thickness rather than solely at the surface. Consequently, from fiber selection through final inspection, the manufacturing process ensures every sheet meets the performance specifications of its grade.

Key Filter Paper Characteristics

• High void volume between randomly packed fibers sustains rapid flow rates even as accumulated particulate loading increases during filtration.
• At 1.6um rated retention, the fiber matrix captures particles above the threshold while allowing smaller materials to pass through.
• Pure borosilicate glass construction eliminates organic extractables that could interfere with downstream chromatographic or spectroscopic analysis.
• Borosilicate glass microfiber construction provides depth filtration with loading capacity far exceeding cellulose papers of equivalent retention.
• Borosilicate glass microfiber depth structure provides high particle loading capacity with flow rates significantly faster than cellulose papers of equivalent retention.

Your sample preparation workflow benefits from a filter paper whose performance is defined, documented, and consistent from one purchase to the next. Grade-specific retention ratings let you match particle capture to the specific requirements of each analytical method in your laboratory. 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

20mL

Diameter

21mm

Folded/ Fluted/ Pleated

No

Grade

A

Material

Glass Fiber (GF)

Nominal Basis Weight (g/ m²)

53g/m²

Pack Count

100

Particle Retention

1.6um

Pore Size (µm)

1.6

Sterility

Nonsterile

Weight

0.12

Wettability

Hydrophobic

• Biological Clarification - Clears cell culture harvests and biological lysates of particulate debris before chromatographic purification.
• Water Quality Monitoring - Collects suspended solids from environmental water samples for regulatory compliance and watershed assessment.
• Turbid Sample Processing - High loading capacity filters heavily particulate environmental and industrial samples without premature clogging.
• Protein Precipitation - Captures precipitated proteins from biological fluids for downstream immunoassay and biochemical characterization.
• Scintillation Counting - Binderless glass fiber provides the chemically clean substrate liquid scintillation counting methods require.
• Membrane Prefiltration - Removes coarse debris from turbid samples before downstream membrane analysis to prevent premature blinding.