Grade 541 Ashless Fast Filter Paper, 320mm Circles (100 pcs) SKU: 1541-320

Quantitative Ashless Filter Paper - 1541-320

Sulfate determination by precipitation requires filter paper whose ash content remains below the method's blank specification after ignition. Controlled washing process removes metallic and mineral contaminants that would otherwise contribute measurable mass after ignition. Certificate of conformance documentation accompanies each lot, providing traceability for quality systems and regulatory audit requirements.

Key Filter Paper Characteristics

• Pure cellulose fiber matrix combines low inorganic residue with the mechanical integrity needed for careful precipitate transfer.
• Nominal retention of 22um provides the particle size cutoff appropriate for the analytical or preparative separation method.
• Controlled fiber density balances rapid filtration with complete precipitate capture for efficient quantitative determinations.
• At 82g/m² nominal basis weight, the paper provides the mass uniformity needed for reproducible gravimetric determinations.
• Enhanced wet strength allows vacuum filtration at higher differential pressures without risking paper rupture mid-run.

When your analytical procedure specifies a particular grade, the retention and purity characteristics documented above confirm method compliance. In these cases, consistent lot-to-lot ash values mean your validated gravimetric method stays valid without recalibrating blank corrections between purchases. Make the decision for consistency and reliability, ensuring that your laboratory maintains its reputation for high-quality, error-free output.

Diameter

320mm

Flow Speed

Fast

Folded/ Fluted/ Pleated

No

Grade

541

Hardened (Yes/ No)

Yes

Material

Cellulose Fiber

Nominal Ash Content (%)

<0.006%

Nominal Basis Weight (g/ m²)

82g/m²

Pack Count

100

Particle Retention

22um

Pore Size (µm)

20.0-25.0

Qualitative/ Quantitative

Quantitative

Sterility

Nonsterile

Wet Strengthened (Yes/ No)

Yes

Wettability

Hydrophilic

• Phosphate Gravimetry - Collects magnesium ammonium phosphate precipitate for ignition to pyrophosphate in soil and fertilizer analysis.
• Calcium Oxalate Analysis - Captures calcium precipitate for ignition to calcium oxide, supporting clinical and water hardness testing.
• Iron Determination - Collects iron hydroxide precipitate for gravimetric determination in ore assay and environmental analysis.
• Silica Determination - Captures dehydrated silica for gravimetric analysis in cement, geological, and industrial raw material testing.
• Nickel Determination - Retains nickel dimethylglyoxime precipitate for ignition-based quantification in alloy and plating bath testing.
• Chloride Gravimetry - Retains silver chloride precipitate for mass-based chloride determination in water quality and process control.