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Thumbnail Filmstrip of Cellulose Quantitative Filter Paper Discs, Grade 540, 150mm, Hardened Ashless, 100/Pk Images
Featuring an acid-hardened, ashless cellulose medium, these Grade 540 quantitative filter paper discs deliver medium retention and a medium flow rate for critical analytical filtration. Manufactured from high-quality cotton linters, the 150mm circles are hydrophilic and extremely pure, with a hard, tough surface that resists tearing during filtration and allows precipitates to be scraped cleanly from the paper. Each pack contains 100 discs.
Key Cellulose Filter Paper Characteristics
- Acid-hardened, ashless construction reduces ash to an extremely low level for accurate gravimetric work
- Hydrophilic cellulose made from high-quality cotton linters for high purity and consistency
- Medium particle retention paired with a medium flow rate suits a broad range of routine quantitative filtrations
- High wet strength and high chemical resistance to strong acid and alkali suspensions
- Hard, tough surface prevents tearing and lets users recover precipitates directly from the paper
Key Construction Characteristics
- Grade 540 quantitative, hardened, ashless cellulose filter paper
- 150mm diameter circles
- Nonsterile, supplied 100 discs per pack
These discs maintain sample integrity throughout demanding gravimetric procedures, providing dependable retention and clean precipitate recovery. Their high wet strength and chemical resistance support reliable performance in strongly acidic or alkaline solutions, making them well suited to the quantitative analysis of metals and the collection of hydroxides.
- Color
- White
- Diameter
- 150mm
- Flow Speed
- Medium
- Grade
- 540
- Hardened (Yes/ No)
- Yes
- Material
- Cellulose
- Mesh Format
- Circle
- Pack Count
- 100
- Pore Size (µm)
- 7.0-12.0
- Qualitative/ Quantitative
- Quantitative
- Sterility
- Nonsterile
- Wettability
- Hydrophilic
- Gravimetric Analysis Acid-hardened ashless construction makes these discs ideal for gravimetric determination of metals where the paper can be ashed with negligible residue.
- Acid and Alkali Suspension Filtration High chemical resistance allows reliable filtration of strongly acidic or alkaline solutions without paper breakdown.
- Hydroxide Collection The tough, hardened surface supports collection of hydroxides after precipitation by strong alkalis.
- Quantitative Sample Preparation Medium retention and flow rate make the discs well suited to preparing samples for downstream analytical determination.
- Precipitate Recovery The acid-treated surface prevents tearing and lets users scrape precipitates directly from the paper for further analysis.
- Buchner Funnel Filtration High wet strength suits the discs for vacuum-assisted filtration in Buchner funnels and filtration under pressure.