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Thumbnail Filmstrip of Quantitative Filter Paper, Ashless, 14-17um, 90mm, Medium Flow, Nonsterile, 100/Pk Images
Featuring a refined cellulose medium made from pure cotton linters with an alpha-cellulose content of nearly 100%, this quantitative ashless filter paper delivers a 14 to 17 micron nominal particle retention with a medium flow rate. The 90mm circles carry an ash content of less than 0.007% and a nominal thickness of 180 microns, making them suited to routine gravimetric work where residue weight accuracy is essential. Each pack contains 100 discs.
Key Filter Paper Characteristics
- Quantitative ashless grade with an ash content of less than 0.007%, preserving the integrity of weight measurements after ignition.
- Medium flow rate balanced against a 14 to 17 micron retention range for general-purpose precipitate collection.
- Constructed from refined pulp and pure cotton linters with virtually 100% alpha-cellulose content.
- Nominal thickness of 180 microns provides consistent mechanical handling during filtration.
- Hydrophilic surface wets readily with aqueous samples for steady, reproducible filtration.
Key Construction Characteristics
- 90mm diameter flat disc format compatible with Buchner funnels and pressure filtration setups.
- Supplied nonsterile in a convenient pack of 100 discs.
- Borosilicate-free pure cellulose composition with low background contamination.
This grade maintains a dependable balance of flow and retention across a broad range of analytical separations. The ashless designation supports critical gravimetric procedures where combustion residue must be negligible, helping protect the accuracy of quantitative results and the integrity of your samples.
- Color
- White
- Diameter
- 90mm
- Flow Speed
- Medium
- Folded/ Fluted/ Pleated
- Disc
- Grade
- DME43
- Hardened (Yes/ No)
- No
- Material
- Filter Paper
- Membrane Thickness (µm)
- 180
- Nominal Ash Content (%)
- <0.007
- Nominal Basis Weight (g/ m²)
- 85
- Nominal Thickness (µm)
- 180
- Pack Count
- 100
- Particle Retention
- 14-17 µm
- Pore Size (µm)
- 14-17
- Qualitative/ Quantitative
- Quantitative
- Sterility
- Nonsterile
- Wettability
- Hydrophilic
- Whatman Equivalent
- 43
- Gravimetric Analysis The ashless construction with less than 0.007% residue supports accurate weighing of precipitates after ignition.
- Quantitative Precipitate Collection The 14 to 17 micron retention captures medium-sized analytical precipitates such as calcium carbonate.
- Buchner Funnel Filtration The 90mm disc format and medium flow rate suit vacuum and pressure filtration in funnel assemblies.
- Soil and Seed Testing Medium flow and retention make these discs practical for routine agricultural sample preparation.
- Liquid Clarification The cellulose medium clarifies aqueous laboratory solutions while removing suspended particulates.
- Routine Analytical Separations A general-purpose grade well suited to everyday quantitative laboratory work.