Grade 40 Quadrant Pre-Folded Filter Paper, 150mm Circle, 500 Pk SKU: 10380006

Quantitative Ashless Filter Paper - 10380006

Classical analytical methods requiring filter ignition with collected precipitate demand documented ash values verifiable through every production lot. Smooth fiber surface facilitates clean precipitate release during transfer operations from funnel to crucible. Quality-controlled production produces filter paper with the documented consistency that reproducible analytical and preparative methods demand.

Key Filter Paper Characteristics

• Pure cellulose fiber construction without hardening treatment ensures minimal chemical background in filtered samples.
• 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.
• Acid-washed cellulose construction produces ash content below 0.01%, meeting the blank value requirements of quantitative gravimetric methods.
• Certificate of analysis documents actual ash content per production lot, providing traceability for regulated analytical methods.

Reporting filtration parameters alongside your analytical results demands documented grade, retention, and lot traceability for reviewer confidence. Uniform fiber density across the sheet area ensures your precipitate capture remains consistent from center to edge. 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

150mm

Flow Speed

Medium

Folded/ Fluted/ Pleated

Yes

Grade

40

Hardened (Yes/ No)

No

Material

Cellulose Fiber

Nominal Ash Content (%)

<0.007%

Nominal Basis Weight (g/ m²)

95g/m²

Pack Count

500

Particle Retention

8um

Pore Size (µm)

8

Qualitative/ Quantitative

Quantitative

Sterility

Nonsterile

Wet Strengthened (Yes/ No)

No

Wettability

Hydrophilic

• 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.
• Gravimetric Determination - Collects and ignites precipitates for accurate mass measurement with negligible filter blank contribution.
• 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.