Quantitative Ashless Filter Paper, Fast, 20-25 um, 70mm, 100/Pk SKU: CF15000

Quantitative Ashless Filter Paper - CF15000

Trace-level determinations by ignition depend on filter paper with ash content low enough to fall within method-acceptable blank ranges. Accurate mass-based determinations start with a filter medium whose residue after ignition is controlled, tested, and traceable. Working in concert, from fiber selection through final inspection, the manufacturing process ensures every sheet meets the performance specifications of its grade.

Key Filter Paper Characteristics

• Nominal retention of 20-25um provides the particle size cutoff appropriate for the analytical or preparative separation method.
• Non-strengthened grades deliver consistent retention at the economical price point that high-volume routine methods demand.
• Manufactured under controlled acid washing conditions, each sheet delivers consistent ash levels across production lots for method reproducibility.
• Manufactured to a basis weight of 80±5g/m², each filter delivers the documented mass consistency that gravimetric methods require.
• Acid-washed cellulose construction produces ash content below 0.01%, meeting the blank value requirements of quantitative gravimetric methods.

If your teaching or research laboratory processes high volumes of routine samples, the documented flow rates above translate directly to throughput. To that end, certificate-backed ash specifications provide the documented evidence your quality auditors require for gravimetric method validation. Elevate the quality of your analytical data today by standardizing on a filtration product built to meet the exact specifications of your applications.

Capacity

1.5mL

Diameter

70mm

Flow Speed

Fast

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

20-25um

Pore Size (µm)

20.0-25.0

Qualitative/ Quantitative

Quantitative Ashless

Sterility

Nonsterile

Weight

0.26

Wet Strengthened (Yes/ No)

No

Wettability

Hydrophilic

• Aluminum Analysis - Collects aluminum hydroxide precipitate for ignition and weighing in metallurgical and environmental methods.
• Iron Determination - Collects iron hydroxide precipitate for gravimetric determination in ore assay and environmental analysis.
• Gravimetric Determination - Collects and ignites precipitates for accurate mass measurement with negligible filter blank contribution.
• Phosphate Gravimetry - Collects magnesium ammonium phosphate precipitate for ignition to pyrophosphate in soil and fertilizer analysis.
• Nickel Determination - Retains nickel dimethylglyoxime precipitate for ignition-based quantification in alloy and plating bath testing.
• Lead Quantification - Captures lead sulfate precipitate for gravimetric determination in environmental and industrial samples.