Quantitative Ashless Filter Paper, Slow 2-4 um, 70mm, 100/Pk SKU: CF15018

Quantitative Ashless Filter Paper - CF15018

Trace-level determinations by ignition depend on filter paper with ash content low enough to fall within method-acceptable blank ranges. Environmental and pharmaceutical laboratories running ignition-based assays need ashless paper that meets their method's blank specifications. Consistent physical properties across the full sheet area support uniform filtration results in both gravity and vacuum applications.

Key Filter Paper Characteristics

• Ashless filter paper provides the documented low residue needed for ignition-based analytical procedures where filter mass affects results.
• Standard cellulose construction eliminates chemical treatment steps that could introduce background contamination in sensitive analytical methods.
• Rated at 2-4um particle retention, the fiber matrix provides a defined cutoff for consistent separation across analytical batches.
• Tightly controlled manufacturing produces documented ash content that remains consistent across production lots for method reproducibility.
• Fine-pore structure ensures thorough capture of small precipitates and fine suspensions for accurate quantitative recovery.

Scaling your method from development to routine production requires paper consistency at every lot, and the specifications above provide that assurance. Addressing this directly, acid-washed cellulose removes the inorganic contaminants that would otherwise introduce blank errors in your ignition-based quantitative determinations. Secure your research outcomes by partnering with a filtration solution that understands your need for speed, accuracy, and reproducibility.

Capacity

1mL

Diameter

70mm

Flow Speed

Slow

Folded/ Fluted/ Pleated

No

Hardened (Yes/ No)

No

Material

Cellulose

Nominal Ash Content (%)

≤0.011%

Nominal Basis Weight (g/ m²)

80±5g/m²

Pack Count

100

Particle Retention

2-4um

Pore Size (µm)

2.0-4.0

Qualitative/ Quantitative

Quantitative Ashless

Sterility

Nonsterile

Weight

0.26

Wet Strengthened (Yes/ No)

No

Wettability

Hydrophilic

• Nickel Determination - Retains nickel dimethylglyoxime precipitate for ignition-based quantification in alloy and plating bath testing.
• Zinc Analysis - Collects zinc ammonium phosphate precipitate for ignition-based quantification in metallurgical and water testing.
• Sulfate Gravimetry - Retains barium sulfate precipitate for ignition-based sulfate quantification in water and industrial samples.
• Phosphate Gravimetry - Collects magnesium ammonium phosphate precipitate for ignition to pyrophosphate in soil and fertilizer analysis.
• 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.