Grade 40 Ashless Filter Paper for Pollution Analysis, 185mm Circle, 100/Pk SKU: 1440-185

Quantitative Ashless Filter Paper - 1440-185

Gravimetric procedures in regulated laboratories require documented ash content that can be reported alongside analytical results for compliance verification. Acid-washed cellulose construction reduces inorganic residue to levels below 0.01%, meeting the blank requirements of gravimetric analytical methods. Working in concert, rigorous quality control at every production stage ensures physical properties align with published grade specifications before distribution.

Key Filter Paper Characteristics

• 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.
• Smooth surface finish facilitates complete precipitate recovery and clean separation from the paper during transfer operations.
• Tightly controlled manufacturing produces documented ash content that remains consistent across production lots for method reproducibility.
• Acid-washed cellulose construction produces ash content below 0.01%, meeting the blank value requirements of quantitative gravimetric methods.

If your laboratory supports multiple research groups with varying filtration needs, this paper's broad applicability simplifies your procurement process. In this context, acid-washed cellulose removes the inorganic contaminants that would otherwise introduce blank errors in your ignition-based quantitative determinations. Elevate the quality of your analytical data today by standardizing on a filtration product built to meet the exact specifications of your applications.

Diameter

185mm

Flow Speed

Medium

Folded/ Fluted/ Pleated

No

Grade

40

Hardened (Yes/ No)

No

Material

Cellulose Fiber

Nominal Ash Content (%)

<0.007%

Nominal Basis Weight (g/ m²)

95g/m²

Pack Count

100

Particle Retention

8um

Pore Size (µm)

8

Qualitative/ Quantitative

Quantitative

Sterility

Nonsterile

Wet Strengthened (Yes/ No)

No

Wettability

Hydrophilic

• 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.
• Chloride Gravimetry - Retains silver chloride precipitate for mass-based chloride determination in water quality and process control.
• Gravimetric Determination - Collects and ignites precipitates for accurate mass measurement with negligible filter blank contribution.
• Nickel Determination - Retains nickel dimethylglyoxime precipitate for ignition-based quantification in alloy and plating bath testing.
• Aluminum Analysis - Collects aluminum hydroxide precipitate for ignition and weighing in metallurgical and environmental methods.