Grade 542 Ashless Fine Precipitate Filter, 240mm Circles (100 pcs) SKU: 1542-240

Quantitative Ashless Filter Paper - 1542-240

Analytical laboratories performing routine gravimetric work need filter paper with consistent, documented ash values across every production lot. Smooth fiber surface facilitates clean precipitate release during transfer operations from funnel to crucible. Working in concert, rigorous quality control at every production stage ensures physical properties align with published grade specifications before distribution.

Key Filter Paper Characteristics

• Designed for gravimetric determinations where the filter paper is ashed or ignited as part of the analytical measurement step.
• Basis weight of 93g/m² indicates the fiber mass per unit area that controls retention, flow rate, and wet strength.
• Pure cellulose fiber matrix combines low inorganic residue with the mechanical integrity needed for careful precipitate transfer.
• Certificate of analysis documents actual ash content per production lot, providing traceability for regulated analytical methods.
• At 2.7um rated retention, the fiber matrix captures particles above the threshold while allowing smaller materials to pass through.

When your analytical procedure specifies a particular grade, the retention and purity characteristics documented above confirm method compliance. For this purpose, acid-washed cellulose removes the inorganic contaminants that would otherwise introduce blank errors in your ignition-based quantitative determinations. 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

240mm

Flow Speed

Slow

Folded/ Fluted/ Pleated

No

Grade

542

Hardened (Yes/ No)

Yes

Material

Cellulose Fiber

Nominal Ash Content (%)

<0.006%

Nominal Basis Weight (g/ m²)

93g/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

• Gravimetric Determination - Collects and ignites precipitates for accurate mass measurement with negligible filter blank contribution.
• Iron Determination - Collects iron hydroxide precipitate for gravimetric determination in ore assay and environmental analysis.
• Aluminum Analysis - Collects aluminum hydroxide precipitate for ignition and weighing in metallurgical and environmental methods.
• Sulfate Gravimetry - Retains barium sulfate precipitate for ignition-based sulfate quantification in water and industrial 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.