Grade 43 Ashless Filter Paper for Inorganic Analysis, 150mm Circle, 100/Pk SKU: 1443-150

Quantitative Ashless Filter Paper - 1443-150

Accurate mass-based determinations start with a filter medium whose residue after ignition is controlled, tested, and traceable. Acid washing removes metallic ions that could interfere with trace element determinations following ignition of the loaded filter. Documented grade specifications provide laboratories with the technical data needed to select appropriate papers without preliminary testing.

Key Filter Paper Characteristics

• Non-hardened paper balances effective particle retention with economical unit cost for high-volume routine laboratory use.
• Acid-washed cellulose construction produces ash content below 0.01%, meeting the blank value requirements of quantitative gravimetric methods.
• Tightly controlled manufacturing produces documented ash content that remains consistent across production lots for method reproducibility.
• Smooth surface finish facilitates complete precipitate recovery and clean separation from the paper during transfer operations.
• Manufactured under controlled acid washing conditions, each sheet delivers consistent ash levels across production lots for method reproducibility.

When your analytical procedure specifies a particular grade, the retention and purity characteristics documented above confirm method compliance. Fine fiber construction provides the mechanical integrity you need to transfer collected precipitates to the crucible without sample loss. Secure your research outcomes by partnering with a filtration solution that understands your need for speed, accuracy, and reproducibility.

Diameter

150mm

Flow Speed

Medium Fast

Folded/ Fluted/ Pleated

No

Grade

43

Hardened (Yes/ No)

No

Material

Cellulose Fiber

Nominal Ash Content (%)

<0.007%

Nominal Basis Weight (g/ m²)

95g/m²

Pack Count

100

Particle Retention

16um

Pore Size (µm)

1.5

Qualitative/ Quantitative

Quantitative

Sterility

Nonsterile

Wet Strengthened (Yes/ No)

No

Wettability

Hydrophilic

• Calcium Oxalate Analysis - Captures calcium precipitate for ignition to calcium oxide, supporting clinical and water hardness testing.
• Chloride Gravimetry - Retains silver chloride precipitate for mass-based chloride determination in water quality and process control.
• 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.
• Total Ash Testing - Provides the ultra-low blank needed for accurate ash determination in food, pharmaceutical, and material samples.
• Lead Quantification - Captures lead sulfate precipitate for gravimetric determination in environmental and industrial samples.