Quantitative Ashless Filter Paper, Slow 2-4 um, 180mm, 100/Pk SKU: CF15023

Quantitative Ashless Filter Paper - CF15023

Methods specifying filter ignition with collected precipitate demand ash contributions that remain negligible and predictable across production lots. Methods specifying filter ignition with collected precipitate demand ash contributions that remain negligible and predictable across production lots. In combination, documented grade specifications provide laboratories with the technical data needed to select appropriate papers without preliminary testing.

Key Filter Paper Characteristics

• Smooth surface finish facilitates complete precipitate recovery and clean separation from the paper during transfer operations.
• Unmodified cellulose surface provides natural hydrophilic properties for rapid wetting in aqueous filtration applications.
• Manufactured under controlled acid washing conditions, each sheet delivers consistent ash levels across production lots for method reproducibility.
• Controlled ash level at ≤0.011% ensures inorganic residue after ignition remains within the acceptable range for gravimetric procedures.
• Particle retention rating of 2-4um defines the separation threshold for the application, determining which solids are captured and which pass through.

If your teaching or research laboratory processes high volumes of routine samples, the documented flow rates above translate directly to throughput. To meet this need, ashless purity positions this paper as your standard medium for any method where the filter becomes part of the final measurement. Make the decision for consistency and reliability, ensuring that your laboratory maintains its reputation for high-quality, error-free output.

Capacity

1mL

Diameter

180mm

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

0.56

Wet Strengthened (Yes/ No)

No

Wettability

Hydrophilic

• Aluminum Analysis - Collects aluminum hydroxide precipitate for ignition and weighing in metallurgical and environmental methods.
• Silica Determination - Captures dehydrated silica for gravimetric analysis in cement, geological, and industrial raw material testing.
• Gravimetric Determination - Collects and ignites precipitates for accurate mass measurement with negligible filter blank contribution.
• Lead Quantification - Captures lead sulfate precipitate for gravimetric determination in environmental and industrial samples.
• Calcium Oxalate Analysis - Captures calcium precipitate for ignition to calcium oxide, supporting clinical and water hardness testing.
• Total Ash Testing - Provides the ultra-low blank needed for accurate ash determination in food, pharmaceutical, and material samples.