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Thumbnail Filmstrip of Qualitative Filter Paper, Grade 05, 70mm, Very Slow, Low Ash, Cellulose, 100/Pk Images
Featuring a low ash cellulose medium made from refined pulp and pure cotton linters with an alpha-cellulose content near 100%, this 70mm qualitative filter paper disc delivers the very slow filtration and high fine-particle retention demanded by exacting analytical work. As Grade 05 (DXS05), it provides the lowest filtration rate in the qualitative range and the maximum degree of fine particle retention, with a nominal retention of 3um and a low ash content of less than 0.06% that is not reduced by post-treatment.
Key Cellulose Media Characteristics
- Manufactured from refined pulp and pure cotton linters with an alpha-cellulose content of nearly 100% for consistent, repeatable filtration.
- Very slow filtration speed delivering the maximum degree of fine particle retention in the qualitative range.
- Nominal particle retention of 3um, suited to extra fine-grained precipitates and difficult clarifications.
- Low ash content of less than 0.06% that is not reduced by post-treatment, minimizing residual contribution to the sample.
- Naturally hydrophilic structure that wets readily for fast, uniform liquid uptake.
Key Construction Characteristics
- Cellulose filter paper disc in a 70mm diameter format.
- Grade 05 (DXS05) qualitative, very slow filtration classification.
- Nonsterile, supplied 100 discs per pack.
The very slow flow and fine retention make this grade well suited to clarifying cloudy suspensions and resolving extra fine-grained precipitates. The low ash, high alpha-cellulose construction maintains sample integrity across routine qualitative separations, helping ensure clean, reliable results in difficult filtration conditions.
- Color
- White
- Diameter
- 70mm
- Flow Speed
- Very Slow
- Grade
- DXS05
- Material
- Cellulose
- Mesh Format
- Circle
- Nominal Ash Content (%)
- <0.06
- Pack Count
- 100
- Particle Retention
- 3-5 um
- Pore Size (µm)
- 3
- Qualitative/ Quantitative
- Qualitative
- Sterility
- Nonsterile
- Wettability
- Hydrophilic
- Fine Precipitate Clarification Retains extra fine-grained precipitates such as barium sulphate and cupreous oxide where maximum fine particle retention is required.
- Cloudy Suspension Filtration Clarifies cloudy suspensions in difficult filtration conditions thanks to its very slow flow and high retention.
- Water Analysis Supports water analysis procedures that demand the finest qualitative retention available in the range.
- Soil Analysis Used in soil analysis where careful separation of fine particulate from liquid is needed.
- Wine Clarification Often specified for the clarification of wine and similar liquids that are hard to clarify.
- Qualitative Analytical Separations Identifies and determines materials in qualitative analytical techniques requiring low ash content.