Grade 542 Ashless Fine Precipitate Filter, 185mm Circles (100 pcs) SKU: 1542-185

Quantitative Ashless Filter Paper - 1542-185

Trace-level determinations by ignition depend on filter paper with ash content low enough to fall within method-acceptable blank ranges. Acid-washed cellulose construction reduces inorganic residue to levels below 0.01%, meeting the blank requirements of gravimetric analytical methods. In practice, consistent physical properties across the full sheet area support uniform filtration results in both gravity and vacuum applications.

Key Filter Paper Characteristics

• Smooth surface finish facilitates complete precipitate recovery and clean separation from the paper during transfer operations.
• At 2.7um rated retention, the fiber matrix captures particles above the threshold while allowing smaller materials to pass through.
• Controlled fiber density balances rapid filtration with complete precipitate capture for efficient quantitative determinations.
• Basis weight of 93g/m² indicates the fiber mass per unit area that controls retention, flow rate, and wet strength.
• Designed for gravimetric determinations where the filter paper is ashed or ignited as part of the analytical measurement step.

When your application makes the filter paper part of the measurement, the ash and weight specifications above define its analytical contribution. Certificate-backed ash specifications provide the documented evidence your quality auditors require for gravimetric method validation. 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

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

• 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.
• Aluminum Analysis - Collects aluminum hydroxide precipitate for ignition and weighing in metallurgical and environmental methods.
• Gravimetric Determination - Collects and ignites precipitates for accurate mass measurement with negligible filter blank contribution.
• Chloride Gravimetry - Retains silver chloride precipitate for mass-based chloride determination in water quality and process control.
• Silica Determination - Captures dehydrated silica for gravimetric analysis in cement, geological, and industrial raw material testing.