Your Cart (0)
Thumbnail Filmstrip of Cellulose Quantitative Filter Paper, 55mm, Medium-Slow, 7-9um Retention, Ashless, 100/Pk Images
Featuring an ashless cellulose medium refined from pure cotton linters with an alpha-cellulose content of virtually 100%, this 55mm quantitative filter paper disc delivers medium-slow filtration with a 7 to 9 micron particle retention range. The medium provides a nominal thickness of 170 microns and a basis weight of 85 g/m2, with an ash content below 0.007% that supports accurate gravimetric and quantitative determinations. Each disc measures 55mm in diameter and ships 100 per pack.
Key Cellulose Media Characteristics
- Ashless purity: Acid-washed cellulose reduces ash content to less than 0.007%, minimizing background contamination in combusted samples.
- Medium-slow flow: Balances filtration speed with reliable capture of fine precipitates.
- 7 to 9 micron retention: Suited to fine analytical precipitates and quantitative sample preparation.
- High-purity construction: Refined pulp and pure cotton linters provide an alpha-cellulose content of virtually 100%.
- Mechanical strength: Enhanced strength supports use in Buchner funnels and filtration under pressure.
Key Construction Characteristics
- Diameter: 55mm circle.
- Nominal thickness: 170 microns.
- Nominal basis weight: 85 g/m2.
- Grade: DMS40 quantitative, ashless, medium-slow.
- Pack: 100 discs per box, nonsterile.
This quantitative grade maintains consistent ash content and physical properties across production lots, supporting reproducible gravimetric results. The medium-slow flow rate and fine retention work together to protect sample integrity during analytical filtration. It is well suited to laboratories performing routine and critical quantitative analysis.
- Color
- White
- Diameter
- 55mm
- Flow Speed
- Medium-Slow
- Folded/ Fluted/ Pleated
- No
- Grade
- DMS40
- Material
- Cellulose
- Mesh Format
- Circle
- Nominal Ash Content (%)
- <0.007
- Nominal Basis Weight (g/ m²)
- 85
- Nominal Thickness (µm)
- 170
- Pack Count
- 100
- Particle Retention
- 7-9 µm
- Pore Size (µm)
- 7-9
- Qualitative/ Quantitative
- Quantitative
- Sartorius Equivalent
- 5B
- Sterility
- Nonsterile
- Wettability
- Hydrophilic
- Whatman Equivalent
- Grade 40
- Gravimetric Analysis The ashless cellulose medium with under 0.007% ash content supports accurate weight measurements of combusted samples.
- Fine Precipitate Filtration Medium-slow flow with 7-9 micron retention reliably captures fine analytical precipitates.
- Buchner Funnel Filtration Enhanced mechanical strength makes the disc suitable for vacuum and pressure-assisted filtration.
- Quantitative Sample Preparation High-purity cotton linter construction supports preparation of samples for quantitative analysis.
- Soil and Environmental Testing Fine retention separates solid matter from aqueous extracts for downstream analysis.
- Metal and Mineral Determination Low ash residue suits gravimetric determination of inorganic precipitates.