Grade 50 Filter Paper, Thin, 185mm Circle, 100/Pk SKU: 1450-185

Quantitative Ashless Filter Paper - 1450-185

Gravimetric analysis demands filter paper that contributes virtually no residue after ignition, ensuring mass measurements reflect the sample alone. Controlled fiber density balances rapid filtration rates with complete precipitate capture for efficient quantitative determinations. Accordingly, from fiber selection through final inspection, the manufacturing process ensures every sheet meets the performance specifications of its grade.

Key Filter Paper Characteristics

• Manufactured to a basis weight of 115g/m², each sheet delivers the documented mass consistency that gravimetric methods require.
• Acid washing process removes metallic contaminants that could interfere with trace element determinations after ignition.
• Ashless filter paper provides the documented low residue needed for ignition-based analytical procedures where filter mass affects results.
• Manufactured under controlled acid washing conditions, each sheet delivers consistent ash levels across production lots for method reproducibility.
• Nominal ash content of <0.015% ensures minimal inorganic residue after ignition, protecting the accuracy of gravimetric determinations.

If your teaching or research laboratory processes high volumes of routine samples, the documented flow rates above translate directly to throughput. Premium cellulose purity reduces the blank correction calculations your gravimetric procedures would otherwise require. Elevate the quality of your analytical data today by standardizing on a filtration product built to meet the exact specifications of your applications.

Diameter

185mm

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

• Phosphate Gravimetry - Collects magnesium ammonium phosphate precipitate for ignition to pyrophosphate in soil and fertilizer analysis.
• 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.
• Nickel Determination - Retains nickel dimethylglyoxime precipitate for ignition-based quantification in alloy and plating bath testing.
• 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.