Ashless Filter Aid Clippings, 500 g Pk SKU: 1703-050

Whatman Ashless Clippings - 1703-050

Whatman Ashless Clippings provide a practical solution for laboratories requiring increased bed depth without replacing an existing filter paper setup. Added directly to a filter funnel on top of a standard filter paper, the clippings form an additional fibrous layer that intercepts coarser particulates before they reach the primary filter. Acid-washed cellulose construction keeps inorganic residue below 0.015% nominal ash content, preserving the gravimetric integrity of the underlying quantitative method. The result is a longer filter life, improved prefiltration efficiency, and more consistent performance across high-particulate sample matrices.

Key Material Characteristics

• Ashless cellulose clippings deliver a nominal ash content below 0.015%, meeting the blank value requirements of gravimetric methods where filter aid contribution must remain negligible after ignition.
• Acid-washed fiber construction removes inorganic contaminants that would otherwise contribute measurable residue in ignition-based analytical procedures where the filter aid contacts the final sample.
• Applied as a loose fiber layer over an existing filter paper, clippings artificially increase bed depth without requiring a change in funnel size, filter holder, or established filtration protocol.
• Depth filtration through the clippings layer intercepts coarse particulates and gelatinous precipitates before they reach the primary membrane, extending effective filter life in high-loading sample applications.
• Compatible with quantitative ashless filter papers, the clippings preserve overall gravimetric purity of the filtration setup when both the aid and the primary filter are ashed together as part of the analytical procedure.

Whatman Ashless Clippings address a specific challenge that standard filter paper grades cannot solve alone — high-particulate samples that blind a primary filter before adequate sample volume has passed through. The combination of acid-washed purity and flexible application makes them a precise and practical tool for gravimetric workflows handling turbid or heavily loaded matrices. Contact Tisch Scientific for volume pricing and compatibility guidance for your specific filtration application.

Folded/ Fluted/ Pleated

No

Hardened (Yes/ No)

No

Material

Cellulose Fiber

Nominal Ash Content (%)

< 0.015%

Pack Count

500

Pore Size (µm)

20.0-25.0

Qualitative/ Quantitative

Quantitative

Sterility

Nonsterile

Wet Strengthened (Yes/ No)

No

Wettability

Hydrophilic

• Gravimetric prefiltration - Layered over ashless quantitative paper to extend filter life during high-particulate gravimetric determinations.
• Gelatinous precipitate filtration - Intercepts colloidal precipitates that blind standard filter papers before adequate filtrate volume passes.
• Turbid sample preparation - Forms a fiber prefiltration layer for high-particulate water and soil extracts ahead of final quantitative filtration.
• Classical analytical chemistry - Increases bed depth in Buchner funnel setups for difficult sulfate, silica, and phosphate precipitate filtrations.
• Ignition-compatible filter aid - Ashed with collected precipitates where filter aid contribution to final mass must remain below blank value limits.
• High-volume batch filtration - Extends primary filter service life by intercepting coarse particulates before they reach the analytical membrane.