Grade 541 Ashless Fast Filter Paper, 240mm Circles (100 pcs) SKU: 1541-240

Quantitative Ashless Filter Paper - 1541-240

Quantitative methods where the filter is ashed alongside the sample require documented, ultra-low residue to protect analytical accuracy. Certificate of analysis provides lot-specific ash content values for incorporation into method blank calculations and quality records. In effect, consistent physical properties across the full sheet area support uniform filtration results in both gravity and vacuum applications.

Key Filter Paper Characteristics

• Tightly controlled manufacturing produces documented ash content that remains consistent across production lots for method reproducibility.
• Controlled fiber density balances rapid filtration with complete precipitate capture for efficient quantitative determinations.
• Controlled ash level at <0.006% ensures inorganic residue after ignition remains within the acceptable range for gravimetric procedures.
• Rated at 22um particle retention, the fiber matrix provides a defined cutoff for consistent separation across analytical batches.
• Resin treatment provides the tensile strength to resist tearing under vacuum, even when processing large sample volumes.

If your teaching or research laboratory processes high volumes of routine samples, the documented flow rates above translate directly to throughput. Meeting this challenge, certificate-backed ash specifications provide the documented evidence your quality auditors require for gravimetric method validation. Make the decision for consistency and reliability, ensuring that your laboratory maintains its reputation for high-quality, error-free output.

Diameter

240mm

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

• Gravimetric Determination - Collects and ignites precipitates for accurate mass measurement with negligible filter blank contribution.
• 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.
• Nickel Determination - Retains nickel dimethylglyoxime precipitate for ignition-based quantification in alloy and plating bath testing.
• Total Ash Testing - Provides the ultra-low blank needed for accurate ash determination in food, pharmaceutical, and material samples.
• Aluminum Analysis - Collects aluminum hydroxide precipitate for ignition and weighing in metallurgical and environmental methods.