Grade 41 Fast Ashless Filter Paper, 460x570mm Sheet 100/Pk SKU: 1441-917

Quantitative Ashless Filter Paper - 1441-917

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. Documented grade specifications provide laboratories with the technical data needed to select appropriate papers without preliminary testing.

Key Filter Paper Characteristics

• Ash content of <0.007% provides the documented blank value specification that quantitative analytical methods require.
• Nominal basis weight of 85g/m² reflects the fiber density that determines flow rate, retention, and mechanical handling characteristics.
• Designed for gravimetric determinations where the filter paper is ashed or ignited as part of the analytical measurement step.
• Manufactured under controlled acid washing conditions, each sheet delivers consistent ash levels across production lots for method reproducibility.
• Tightly controlled manufacturing produces documented ash content that remains consistent across production lots for method reproducibility.

Reporting filtration parameters alongside your analytical results demands documented grade, retention, and lot traceability for reviewer confidence. Uniform fiber density across the sheet area ensures your precipitate capture remains consistent from center to edge. Secure your research outcomes by partnering with a filtration solution that understands your need for speed, accuracy, and reproducibility.

Dimensions

460 x 570mm

Flow Speed

Fast

Folded/ Fluted/ Pleated

No

Grade

41

Hardened (Yes/ No)

No

Material

Cellulose Fiber

Nominal Ash Content (%)

<0.007%

Nominal Basis Weight (g/ m²)

85g/m²

Pack Count

100

Particle Retention

20um

Pore Size (µm)

20.0-25.0

Qualitative/ Quantitative

Quantitative

Sterility

Nonsterile

Wet Strengthened (Yes/ No)

No

Wettability

Hydrophilic

• Silica Determination - Captures dehydrated silica for gravimetric analysis in cement, geological, and industrial raw material testing.
• Aluminum Analysis - Collects aluminum hydroxide precipitate for ignition and weighing in metallurgical and environmental methods.
• Lead Quantification - Captures lead sulfate precipitate for gravimetric determination in environmental and industrial samples.
• Iron Determination - Collects iron hydroxide precipitate for gravimetric determination in ore assay and environmental analysis.
• Total Ash Testing - Provides the ultra-low blank needed for accurate ash determination in food, pharmaceutical, and material samples.
• Chloride Gravimetry - Retains silver chloride precipitate for mass-based chloride determination in water quality and process control.