Grade 540 Ashless General Lab Filter Paper, 90mm Circles (100 pcs) SKU: 1540-090

Quantitative Ashless Filter Paper - 1540-090

Quantitative methods where the filter is ashed alongside the sample require documented, ultra-low residue to protect analytical accuracy. Smooth fiber surface facilitates clean precipitate release during transfer operations from funnel to crucible. Consistent physical properties across the full sheet area support uniform filtration results in both gravity and vacuum applications.

Key Filter Paper Characteristics

• At 88g/m² nominal basis weight, the paper provides the mass uniformity needed for reproducible gravimetric determinations.
• Nominal retention of 8um provides the particle size cutoff appropriate for the analytical or preparative separation method.
• Pure cellulose fiber matrix combines low inorganic residue with the mechanical integrity needed for careful precipitate transfer.
• Wet-strengthened fiber matrix withstands extended contact with aqueous solutions without the disintegration that limits untreated papers.
• Manufactured under controlled acid washing conditions, each sheet delivers consistent ash levels across production lots for method reproducibility.

If you're transitioning from qualitative screening to quantitative gravimetric work, the documented ash content above confirms this paper's suitability. Addressing this directly, ultra-low ash content ensures your gravimetric results reflect captured material, not residue from the filter paper itself. Elevate the quality of your analytical data today by standardizing on a filtration product built to meet the exact specifications of your applications.

Diameter

90mm

Flow Speed

Medium

Folded/ Fluted/ Pleated

No

Grade

540

Hardened (Yes/ No)

Yes

Material

Cellulose Fiber

Nominal Ash Content (%)

<0.006%

Nominal Basis Weight (g/ m²)

88g/m²

Particle Retention

8um

Pore Size (µm)

8

Qualitative/ Quantitative

Quantitative

Sterility

Nonsterile

Wet Strengthened (Yes/ No)

Yes

Wettability

Hydrophilic

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