Grade 50 Filter Paper, Thin, 125mm Circle, 100/Pk SKU: 1450-125

Quantitative Ashless Filter Paper - 1450-125

Analytical laboratories performing routine gravimetric work need filter paper with consistent, documented ash values across every production lot. Certificate of analysis provides lot-specific ash content values for incorporation into method blank calculations and quality records. To this end, controlled manufacturing delivers the documented retention, flow rate, and physical consistency that analytical and preparative filtration methods require.

Key Filter Paper Characteristics

• Tightly controlled manufacturing produces documented ash content that remains consistent across production lots for method reproducibility.
• Rated at 2.7um 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.
• Designed for gravimetric determinations where the filter paper is ashed or ignited as part of the analytical measurement step.
• Acid washing process removes metallic contaminants that could interfere with trace element determinations after ignition.

Your sample preparation workflow benefits from a filter paper whose performance is defined, documented, and consistent from one purchase to the next. Acid-washed cellulose removes the inorganic contaminants that would otherwise introduce blank errors in your ignition-based quantitative determinations. Make the decision for consistency and reliability, ensuring that your laboratory maintains its reputation for high-quality, error-free output.

Diameter

125mm

Flow Speed

Slow

Folded/ Fluted/ Pleated

No

Grade

50

Hardened (Yes/ No)

Yes

Material

Cellulose Fiber

Nominal Ash Content (%)

<0.015%

Nominal Basis Weight (g/ m²)

115g/m²

Pack Count

100

Particle Retention

2.7um

Pore Size (µm)

2.7

Qualitative/ Quantitative

Quantitative

Sterility

Nonsterile

Wet Strengthened (Yes/ No)

Yes

Wettability

Hydrophilic

• Total Ash Testing - Provides the ultra-low blank needed for accurate ash determination in food, pharmaceutical, and material samples.
• Iron Determination - Collects iron hydroxide precipitate for gravimetric determination in ore assay and environmental analysis.
• Sulfate Gravimetry - Retains barium sulfate precipitate for ignition-based sulfate quantification in water and industrial samples.
• Lead Quantification - Captures lead sulfate precipitate for gravimetric determination in environmental and industrial samples.
• Calcium Oxalate Analysis - Captures calcium precipitate for ignition to calcium oxide, supporting clinical and water hardness testing.
• Zinc Analysis - Collects zinc ammonium phosphate precipitate for ignition-based quantification in metallurgical and water testing.