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Thumbnail Filmstrip of Cellulose Qualitative Filter Paper, 3-5um Retention, 320mm, Very Slow, Low Ash, 100/Pk Images
Featuring a low ash hardened cellulose medium made from refined pulp and pure cotton linters with an alpha-cellulose content of nearly 100%, this 320mm qualitative filter paper disc delivers the lowest filtration rate in the qualitative range with maximum fine particle retention. Grade DXS05 provides a nominal retention range of 3 to 5 micrometers and a nominal thickness of 170 micrometers, making it well suited for the most demanding clarification work. Each box contains 100 discs.
Key Cellulose Media Characteristics
- Manufactured from refined pulp and pure cotton linters with an alpha-cellulose content of nearly 100%, providing consistent filtration performance.
- Very slow filtration speed delivers the highest degree of fine particle retention across the qualitative range.
- Nominal retention range of 3 to 5 micrometers captures extra fine-grained precipitates.
- Low ash content of less than 0.06% that is not reduced by post-treatment.
- Nominal thickness of 170 micrometers with a nominal basis weight of 85 grams per square meter.
Key Construction Characteristics
- 320mm diameter circular disc format for use in large funnels and clarification setups.
- Hydrophilic cellulose construction for rapid and even wetting.
- Nonsterile, supplied 100 discs per box.
This grade maintains reliable retention of extra fine-grained precipitates such as barium sulphate and cupreous oxide, and serves as an excellent clarifying filter for cloudy suspensions. It supports difficult filtration conditions where capturing the finest particulates is critical, helping protect sample integrity in qualitative analytical work.
- Color
- White
- Diameter
- 320mm
- Flow Speed
- Very Slow
- Grade
- DXS05
- Hardened (Yes/ No)
- Yes
- Material
- Cellulose
- Nominal Ash Content (%)
- <0.06
- Nominal Basis Weight (g/ m²)
- 85
- Nominal Thickness (µm)
- 170
- Pack Count
- 100
- Particle Retention
- 3-5 um
- Pore Size (µm)
- 3
- Qualitative/ Quantitative
- Qualitative
- Sterility
- Nonsterile
- Wettability
- Hydrophilic
- Whatman Equivalent
- Grade 5
- Fine Precipitate Filtration Captures extra fine-grained precipitates such as barium sulphate and cupreous oxide that require the highest qualitative retention.
- Cloudy Suspension Clarification Serves as a clarifying filter for cloudy suspensions where maximum fine particle removal is needed.
- Wine Clarification Often specified for clarification of wine and other liquids hard to clarify.
- Water and Soil Analysis Suitable for water and soil analysis where fine particulate retention is essential.
- Difficult Filtration Conditions Performs in demanding filtration scenarios that benefit from a very slow flow rate and high retention.
- Qualitative Analytical Separations Used in qualitative analytical techniques to determine and identify materials.