Quantitative Ashless Filter Paper, Slow 2-4 um, 90mm, 100/Pk SKU: CF15019

Quantitative Ashless Filter Paper - CF15019

Environmental and pharmaceutical laboratories running ignition-based assays need ashless paper that meets their method's blank specifications. Sulfate determination by precipitation requires filter paper whose ash content remains below the method's blank specification after ignition. Certificate of conformance documentation accompanies each lot, providing traceability for quality systems and regulatory audit requirements.

Key Filter Paper Characteristics

• Acid washing process removes metallic contaminants that could interfere with trace element determinations after ignition.
• Tightly controlled manufacturing produces documented ash content that remains consistent across production lots for method reproducibility.
• Standard cellulose construction provides reliable performance for gravity filtration and light vacuum applications.
• Ashless filter paper provides the documented low residue needed for ignition-based analytical procedures where filter mass affects results.
• Controlled fiber density balances rapid filtration with complete precipitate capture for efficient quantitative determinations.

If your laboratory supports multiple research groups with varying filtration needs, this paper's broad applicability simplifies your procurement process. To support this, fine fiber construction provides the mechanical integrity you need to transfer collected precipitates to the crucible without sample loss. Secure your research outcomes by partnering with a filtration solution that understands your need for speed, accuracy, and reproducibility.

Capacity

1mL

Diameter

90mm

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

0.13

Wet Strengthened (Yes/ No)

No

Wettability

Hydrophilic

• 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.
• Chloride Gravimetry - Retains silver chloride precipitate for mass-based chloride determination in water quality and process control.
• Zinc Analysis - Collects zinc ammonium phosphate precipitate for ignition-based quantification in metallurgical and water testing.
• Silica Determination - Captures dehydrated silica for gravimetric analysis in cement, geological, and industrial raw material testing.
• Calcium Oxalate Analysis - Captures calcium precipitate for ignition to calcium oxide, supporting clinical and water hardness testing.