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Thumbnail Filmstrip of Quantitative Filter Paper, Grade 541, Hardened Ashless, Fast, 110mm Circles, 100/Pk Images
Featuring an acid-hardened cellulose depth medium, this Grade 541 quantitative filter paper delivers fast filtration of coarse particles and gelatinous precipitates in 110mm circles. Acid hardening gives the paper high wet strength and high chemical resistance, while reducing residual ash to an extremely low level for accurate gravimetric work. Its 20 to 25um nominal particle retention pairs coarse porosity with a fast flow rate, making it the supplied choice for rapid clarification of strongly acidic or alkaline suspensions.
Key Filter Paper Media Characteristics
- Hardened ashless cellulose construction provides high wet strength and broad chemical resistance to strong acid and alkali samples.
- Coarse, fast flow behavior supports rapid filtration where throughput matters more than fine particle capture.
- 20 to 25um nominal particle retention efficiently captures coarse particles and gelatinous precipitates such as metal hydroxides.
- Extremely low ash content minimizes blank value contribution for reliable quantitative gravimetric determinations.
- Hydrophilic medium wets readily for consistent, repeatable filtration.
Key Construction Characteristics
- Format: 110mm diameter circles.
- Grade: Quantitative, Grade 541, hardened ashless.
- Sterility: Nonsterile.
- Pack: 100 pieces per pack.
This grade maintains its structural integrity through extended chemical exposure, delivering dependable performance in demanding analytical filtrations. The combination of fast flow and low ash content helps preserve sample integrity and supports reproducible gravimetric results across lots.
- Diameter
- 110mm
- Flow Speed
- Fast
- Grade
- Quantitative, Grade 541
- Hardened (Yes/ No)
- Yes
- Material
- Cellulose
- Mesh Format
- Circle
- Pack Count
- 100
- Particle Retention
- 20-25 um
- Pore Size (µm)
- 20.0-25.0
- Qualitative/ Quantitative
- Quantitative
- Sterility
- Nonsterile
- Wettability
- Hydrophilic
- Whatman Equivalent
- Grade 541 (1541-110)
- Gravimetric Analysis Filters coarse particles and gelatinous precipitates from strong acid or alkali solutions while contributing minimal ash to the final weight.
- Coarse Precipitate Filtration Captures bulky precipitates such as metal hydroxides during fast analytical separations.
- Cement Testing Supports determination of chloride in cement and related industrial quality control methods.
- Coal and Coke Analysis Used in quantification of chloride and phosphorous in coal and coke samples.
- Food and Feed Analysis Serves as an animal foodstuff filter for fiber content determination and gelatin content in milk and cream.
- Prefiltration Provides rapid, high-throughput clarification of heavily loaded samples ahead of finer downstream filtration.