Your Cart (0)
Thumbnail Filmstrip of Cellulose Quantitative Filter Paper Discs, Grade 540, Ashless, 55mm, Medium Speed, 100/Pk Images
Featuring a hardened, acid-treated cellulose medium, these Grade 540 quantitative filter paper discs deliver dependable particle retention and exceptional mechanical strength for demanding analytical filtration. Each 55mm disc carries a nominal particle retention of 7 to 9 microns in liquid and a medium filtration speed, with an extremely low ash content that makes the paper well suited to gravimetric and quantitative analysis. The acid-treated surface imparts high wet strength and broad chemical resistance, allowing the paper to withstand handling and the recovery of precipitates by scraping.
Key Cellulose Filter Paper Characteristics
- Hardened, acid-treated cellulose medium with extremely low ash content for accurate gravimetric and quantitative work
- Nominal particle retention of 7 to 9 microns in liquid with a medium filtration speed
- High wet strength resists tearing during filtration and supports precipitate removal by scraping
- High chemical resistance to strong acid and alkali suspensions
- Naturally hydrophilic surface wets readily for consistent flow
Key Construction Characteristics
- 55mm diameter circle format for funnel and Buchner filtration
- Pure cellulose construction in an ashless, hardened grade
- Approximately 0.17mm (170um) nominal thickness
- Nonsterile
- Supplied 100 discs per pack
These discs provide reliable, repeatable retention across critical analytical workflows while maintaining sample integrity through low background contamination. The hardened surface keeps the paper free from loose fibers and supports clean precipitate recovery, helping protect the accuracy of downstream measurements.
- Diameter
- 55mm
- Flow Speed
- Medium
- Grade
- DMS40 (540)
- Hardened (Yes/ No)
- Yes
- Material
- Cellulose
- Membrane Thickness (µm)
- 170
- Mesh Format
- Circle
- Nominal Thickness (µm)
- 170
- Pack Count
- 100
- Particle Retention
- 7-9 um (in liquid)
- Pore Size (µm)
- 7-9
- Qualitative/ Quantitative
- Quantitative
- Sterility
- Nonsterile
- Wettability
- Hydrophilic
- Whatman Equivalent
- Grade 540
- Gravimetric Analysis The extremely low ash content supports accurate gravimetric and quantitative determinations after filtration.
- Acid and Alkali Suspension Filtration High chemical resistance makes the paper well suited to filtering strongly acidic or alkaline samples.
- Metals Analysis Frequently used as a gravimetric filter during the analysis of metals in acidic or alkaline solutions.
- Precipitate Collection The hardened, acid-treated surface allows recovery of hydroxides and other precipitates by scraping from the paper.
- Buchner and Funnel Filtration Medium filtration speed and high wet strength suit Buchner funnel and vacuum-assisted filtration.
- Sample Clarification Prior to Instrumental Analysis Clarifies solutions ahead of techniques such as atomic absorption spectrophotometry.