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Thumbnail Filmstrip of Grade 41 Fast Ashless Filter Paper, 60mm Circle 100/Pk Images
Quantitative Ashless Filter Paper - 1441-060
Environmental and pharmaceutical laboratories running ignition-based assays need ashless paper that meets their method's blank specifications. Acid washing removes metallic ions that could interfere with trace element determinations following ignition of the loaded filter. By design, quality-controlled production produces filter paper with the documented consistency that reproducible analytical and preparative methods demand.
Key Filter Paper Characteristics
- Controlled fiber density balances rapid filtration with complete precipitate capture for efficient quantitative determinations.
- Particle retention rating of 20um defines the separation threshold for the application, determining which solids are captured and which pass through.
- Smooth surface finish facilitates complete precipitate recovery and clean separation from the paper during transfer operations.
- Tightly controlled manufacturing produces documented ash content that remains consistent across production lots for method reproducibility.
- Standard wet strength is sufficient for conventional Buchner funnel and gravity filtration setups at moderate sample volumes.
Whether your method requires simple clarification or precise gravimetric determination, the documented specifications above define what this paper delivers. Premium cellulose purity reduces the blank correction calculations your gravimetric procedures would otherwise require. Make the decision for consistency and reliability, ensuring that your laboratory maintains its reputation for high-quality, error-free output.
- Diameter
- 60mm
- 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.
- 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.
- Nickel Determination - Retains nickel dimethylglyoxime precipitate for ignition-based quantification in alloy and plating bath testing.
- Gravimetric Determination - Collects and ignites precipitates for accurate mass measurement with negligible filter blank contribution.