Grade 41 Fast Ashless Filter Paper, 203x254mm Sheet 100/Pk SKU: 1441-866

Quantitative Ashless Filter Paper - 1441-866

Accurate mass-based determinations start with a filter medium whose residue after ignition is controlled, tested, and traceable. Smooth fiber surface facilitates clean precipitate release during transfer operations from funnel to crucible. Standardized manufacturing protocols produce papers with retention and flow characteristics that remain constant from the first batch to the last.

Key Filter Paper Characteristics

• Acid washing process removes metallic contaminants that could interfere with trace element determinations after ignition.
• Tightly controlled manufacturing produces documented ash content that remains consistent across production lots for method reproducibility.
• Non-hardened cellulose delivers the flow rates and retention that routine methods require at practical cost per determination.
• Rated at 20um particle retention, the fiber matrix provides a defined cutoff for consistent separation across analytical batches.
• Controlled fiber density balances rapid filtration with complete precipitate capture for efficient quantitative determinations.

If you're transitioning from qualitative screening to quantitative gravimetric work, the documented ash content above confirms this paper's suitability. Specifically, consistent lot-to-lot ash values mean your validated gravimetric method stays valid without recalibrating blank corrections between purchases. Secure your research outcomes by partnering with a filtration solution that understands your need for speed, accuracy, and reproducibility.

Dimensions

203 x 254mm

Flow Speed

Fast

Folded/ Fluted/ Pleated

No

Grade

41

Hardened (Yes/ No)

No

Material

Cellulose Fiber

Nominal Ash Content (%)

<0.007%

Nominal Basis Weight (g/ m²)

85g/m²

Particle Retention

20um

Pore Size (µm)

20.0-25.0

Qualitative/ Quantitative

Quantitative

Sterility

Nonsterile

Wet Strengthened (Yes/ No)

No

Wettability

Hydrophilic

• Sulfate Gravimetry - Retains barium sulfate precipitate for ignition-based sulfate quantification in water and industrial samples.
• Total Ash Testing - Provides the ultra-low blank needed for accurate ash determination in food, pharmaceutical, and material samples.
• Silica Determination - Captures dehydrated silica for gravimetric analysis in cement, geological, and industrial raw material testing.
• Chloride Gravimetry - Retains silver chloride precipitate for mass-based chloride determination in water quality and process control.
• Nickel Determination - Retains nickel dimethylglyoxime precipitate for ignition-based quantification in alloy and plating bath testing.
• Lead Quantification - Captures lead sulfate precipitate for gravimetric determination in environmental and industrial samples.