Grade C Glass Fiber Filter Paper 1.2um, 50mm, Nonsterile, 100/Pk SKU: EF19043

Glass Fiber (GF) Filter Paper - EF19043

Clarifying biological fluids and cell culture harvests requires depth filtration capacity that cellulose papers and surface-capture membranes cannot match. Inorganic glass composition produces ultra-low extractable levels suitable for trace analytical methods sensitive to organic background interference. For this reason, lot-level verification of retention, thickness, and ash content ensures predictable performance when scaling from method development to routine analysis.

Key Filter Paper Characteristics

• Pure borosilicate glass construction eliminates organic extractables that could interfere with downstream chromatographic or spectroscopic analysis.
• 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.
• Particle retention rating of 1.2um defines the separation threshold for the application, determining which solids are captured and which pass through.
• Chemically inert glass composition withstands acids, bases, and organic solvents across the full pH range without fiber degradation.

If your environmental monitoring program depends on sample comparability to determine trends, the production consistency of this filter paper protects your data validity. Here, thermal stability exceeding 500 degrees C supports the ignition step your gravimetric method requires without introducing filter decomposition artifacts. 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

350uL

Diameter

50mm

Folded/ Fluted/ Pleated

No

Grade

C

Material

Glass Fiber (GF)

Nominal Basis Weight (g/ m²)

55g/m²

Pack Count

100

Particle Retention

1.2um

Pore Size (µm)

1.2

Sterility

Nonsterile

Weight

0.24

Wettability

Hydrophobic

• Scintillation Counting - Binderless glass fiber provides the chemically clean substrate liquid scintillation counting methods require.
• Water Quality Monitoring - Collects suspended solids from environmental water samples for regulatory compliance and watershed assessment.
• Radioimmunoassay Harvesting - Binderless construction eliminates chemical interference during harvesting of bound radioactive tracers.
• Biological Clarification - Clears cell culture harvests and biological lysates of particulate debris before chromatographic purification.
• Air Particulate Sampling - Captures airborne particulates by vacuum filtration for gravimetric mass determination and subsequent analysis.
• Protein Precipitation - Captures precipitated proteins from biological fluids for downstream immunoassay and biochemical characterization.