Grade 40 Ashless Filter Paper for Pollution Analysis, 32mm Circle, 100/Pk SKU: 1440-032

Quantitative Ashless Filter Paper - 1440-032

Gravimetric analysis demands filter paper that contributes virtually no residue after ignition, ensuring mass measurements reflect the sample alone. Cellulose purity and documented ash specifications position ashless paper as the standard medium for ignition-based quantitative determinations. With this in mind, quality-controlled production produces filter paper with the documented consistency that reproducible analytical and preparative methods demand.

Key Filter Paper Characteristics

• At 95g/m² nominal basis weight, the paper provides the mass uniformity needed for reproducible gravimetric determinations.
• Pure cellulose fiber matrix combines low inorganic residue with the mechanical integrity needed for careful precipitate transfer.
• Acid-washed cellulose construction produces ash content below 0.01%, meeting the blank value requirements of quantitative gravimetric methods.
• Smooth surface finish facilitates complete precipitate recovery and clean separation from the paper during transfer operations.
• Standard cellulose without surface treatment delivers reliable performance for applications where chemical hardening is not required.

When your multi-site study requires comparable data across laboratories, papers manufactured to tight documented specifications ensure your results align. 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

32mm

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

• Zinc Analysis - Collects zinc ammonium phosphate precipitate for ignition-based quantification in metallurgical and water testing.
• Lead Quantification - Captures lead sulfate precipitate for gravimetric determination in environmental and industrial samples.
• Sulfate Gravimetry - Retains barium sulfate precipitate for ignition-based sulfate quantification in water and industrial samples.
• Aluminum Analysis - Collects aluminum hydroxide precipitate for ignition and weighing in metallurgical and environmental methods.
• Phosphate Gravimetry - Collects magnesium ammonium phosphate precipitate for ignition to pyrophosphate in soil and fertilizer analysis.
• Iron Determination - Collects iron hydroxide precipitate for gravimetric determination in ore assay and environmental analysis.