Grade 540 Ashless General Lab Filter Paper, 185mm Circles (100 pcs) SKU: 1540-185

Quantitative Ashless Filter Paper - 1540-185

Gravimetric procedures in regulated laboratories require documented ash content that can be reported alongside analytical results for compliance verification. Controlled fiber density balances rapid filtration rates with complete precipitate capture for efficient quantitative determinations. Working in concert, standardized manufacturing protocols produce papers with retention and flow characteristics that remain constant from the first batch to the last.

Key Filter Paper Characteristics

• Certificate of analysis documents actual ash content per production lot, providing traceability for regulated analytical methods.
• Acid-washed cellulose construction produces ash content below 0.01%, meeting the blank value requirements of quantitative gravimetric methods.
• Nominal retention of 8um provides the particle size cutoff appropriate for the analytical or preparative separation method.
• Smooth surface finish facilitates complete precipitate recovery and clean separation from the paper during transfer operations.
• Designed for gravimetric determinations where the filter paper is ashed or ignited as part of the analytical measurement step.

When your budget requires balancing performance with cost efficiency, the documented consistency above ensures you're not paying for premium features you don't need. For this purpose, 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

185mm

Flow Speed

Medium

Folded/ Fluted/ Pleated

No

Grade

540

Hardened (Yes/ No)

Yes

Material

Cellulose Fiber

Nominal Ash Content (%)

<0.006%

Nominal Basis Weight (g/ m²)

88g/m²

Particle Retention

8um

Pore Size (µm)

8

Qualitative/ Quantitative

Quantitative

Sterility

Nonsterile

Wet Strengthened (Yes/ No)

Yes

Wettability

Hydrophilic

• Silica Determination - Captures dehydrated silica for gravimetric analysis in cement, geological, and industrial raw material testing.
• Calcium Oxalate Analysis - Captures calcium precipitate for ignition to calcium oxide, supporting clinical and water hardness testing.
• Gravimetric Determination - Collects and ignites precipitates for accurate mass measurement with negligible filter blank contribution.
• 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.
• Zinc Analysis - Collects zinc ammonium phosphate precipitate for ignition-based quantification in metallurgical and water testing.