Grade 541 Ashless Fast Filter Paper, 90mm Circles (100 pcs) SKU: 1541-090

Quantitative Ashless Filter Paper - 1541-090

Sulfate determination by precipitation requires filter paper whose ash content remains below the method's blank specification after ignition. Cellulose purity and documented ash specifications position ashless paper as the standard medium for ignition-based quantitative determinations. Lot-level verification of retention, thickness, and ash content ensures predictable performance when scaling from method development to routine analysis.

Key Filter Paper Characteristics

• Enhanced mechanical properties support high differential pressures typical of vacuum manifold applications in high-volume laboratories.
• Acid washing process removes metallic contaminants that could interfere with trace element determinations after ignition.
• Smooth surface finish facilitates complete precipitate recovery and clean separation from the paper during transfer operations.
• Pure cellulose fiber matrix combines low inorganic residue with the mechanical integrity needed for careful precipitate transfer.
• Hardened surface treatment increases wet strength and chemical resistance for demanding analytical procedures.

When your budget requires balancing performance with cost efficiency, the documented consistency above ensures you're not paying for premium features you don't need. Here, certificate-backed ash specifications provide the documented evidence your quality auditors require for gravimetric method validation. Secure your research outcomes by partnering with a filtration solution that understands your need for speed, accuracy, and reproducibility.

Diameter

90mm

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

• Calcium Oxalate Analysis - Captures calcium precipitate for ignition to calcium oxide, supporting clinical and water hardness testing.
• Lead Quantification - Captures lead sulfate precipitate for gravimetric determination in environmental and industrial samples.
• Phosphate Gravimetry - Collects magnesium ammonium phosphate precipitate for ignition to pyrophosphate in soil and fertilizer analysis.
• Sulfate Gravimetry - Retains barium sulfate precipitate for ignition-based sulfate quantification in water and industrial samples.
• Iron Determination - Collects iron hydroxide precipitate for gravimetric determination in ore assay and environmental analysis.
• Gravimetric Determination - Collects and ignites precipitates for accurate mass measurement with negligible filter blank contribution.