Grade 41 Quadrant Folded Filter Paper, 125mm Circle, 500 Pk SKU: 10380205

Quantitative Ashless Filter Paper - 10380205

Gravimetric procedures in regulated laboratories require documented ash content that can be reported alongside analytical results for compliance verification. Tightly controlled manufacturing produces the lot-to-lot consistency that validated gravimetric methods depend on for reproducible results. Consistent physical properties across the full sheet area support uniform filtration results in both gravity and vacuum applications.

Key Filter Paper Characteristics

• Manufactured under controlled acid washing conditions, each sheet delivers consistent ash levels 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.
• Designed for gravimetric determinations where the filter paper is ashed or ignited as part of the analytical measurement step.
• Basis weight of 85g/m² indicates the fiber mass per unit area that controls retention, flow rate, and wet strength.
• Standard cellulose without surface treatment delivers reliable performance for applications where chemical hardening is not required.

Reporting filtration parameters alongside your analytical results demands documented grade, retention, and lot traceability for reviewer confidence. For this purpose, ultra-low ash content ensures your gravimetric results reflect captured material, not residue from the filter paper itself. 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

125mm

Flow Speed

Fast

Folded/ Fluted/ Pleated

Yes

Grade

41

Hardened (Yes/ No)

No

Material

Cellulose Fiber

Nominal Ash Content (%)

<0.007%

Nominal Basis Weight (g/ m²)

85g/m²

Pack Count

500

Particle Retention

20um

Pore Size (µm)

20

Qualitative/ Quantitative

Quantitative

Sterility

Nonsterile

Wet Strengthened (Yes/ No)

No

Wettability

Hydrophilic

• Iron Determination - Collects iron hydroxide precipitate for gravimetric determination in ore assay and environmental analysis.
• 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.
• Chloride Gravimetry - Retains silver chloride precipitate for mass-based chloride determination in water quality and process control.
• Sulfate Gravimetry - Retains barium sulfate precipitate for ignition-based sulfate quantification in water and industrial samples.
• Zinc Analysis - Collects zinc ammonium phosphate precipitate for ignition-based quantification in metallurgical and water testing.