Grade 52 Filter Paper, General, 90mm Circle, 100/Pk SKU: 1452-090

Quantitative Ashless Filter Paper - 1452-090

Analytical laboratories performing routine gravimetric work need filter paper with consistent, documented ash values across every production lot. Controlled fiber density balances rapid filtration rates with complete precipitate capture for efficient quantitative determinations. Quality-controlled production produces filter paper with the documented consistency that reproducible analytical and preparative methods demand.

Key Filter Paper Characteristics

• Tightly controlled manufacturing produces documented ash content that remains consistent across production lots for method reproducibility.
• Enhanced mechanical properties support high differential pressures typical of vacuum manifold applications in high-volume laboratories.
• Smooth surface finish facilitates complete precipitate recovery and clean separation from the paper during transfer operations.
• Pure cellulose fiber matrix combines low inorganic residue with the mechanical integrity needed for careful precipitate transfer.
• Acid-hardened cellulose resists degradation during prolonged contact with strong reagents, protecting filtrate integrity.

When your analytical procedure specifies a particular grade, the retention and purity characteristics documented above confirm method compliance. Acid-washed cellulose removes the inorganic contaminants that would otherwise introduce blank errors in your ignition-based quantitative determinations. Take control of your sample preparation variables and ensure that your data reflects the true nature of your work, rather than the quality of your consumables.

Diameter

90mm

Flow Speed

Medium

Folded/ Fluted/ Pleated

No

Grade

52

Hardened (Yes/ No)

Yes

Material

Cellulose Fiber

Nominal Ash Content (%)

<0.015%

Nominal Basis Weight (g/ m²)

96g/m²

Pack Count

100

Particle Retention

7um

Pore Size (µm)

7

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.
• Sulfate Gravimetry - Retains barium sulfate precipitate for ignition-based sulfate quantification in water and industrial samples.
• Nickel Determination - Retains nickel dimethylglyoxime precipitate for ignition-based quantification in alloy and plating bath testing.
• Iron Determination - Collects iron hydroxide precipitate for gravimetric determination in ore assay and environmental analysis.
• 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.