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Thumbnail Filmstrip of Cellulose Nitrate Membrane Circle, Plain, 0.2um Pore Size, 142mm, 25/Pk Images
Cellulose Nitrate (CN) Membrane Filters - 7182-014
The Whatman 7182-014 protects sensitive instrumentation and sample integrity by providing reliable particulate removal with minimal analyte adsorption or background interference. Verified 0.2 pore distribution across the Hydrophilic membrane surface guarantees batch-to-batch consistency in particle capture and analyte passage. On this basis, consistent surface properties across the full membrane area support uniform particle capture and reliable results in gravimetric, microscopic, and culture-based analytical workflows.
Material Specifications
- Surface retention characteristics allow captured particles and microorganisms to remain on the membrane face, supporting direct microscopic examination and physical recovery of collected material.
- Cellulose nitrate membranes feature a narrow pore size distribution and low extractable levels, providing the controlled retention characteristics required for gravimetric and particulate analysis.
- Autoclavable at 121°C without loss of integrity, cellulose nitrate membranes maintain their rated pore structure and dimensional stability through repeated sterilization cycles.
- Non-sterile configuration is suited for analytical sample preparation, mobile phase filtration, and other workflows where pre-sterilization is not required.
- Dissolves completely in specific organic solvents, enabling full recovery of captured particles from the membrane surface for downstream gravimetric, chemical, or spectroscopic analysis.
Air monitoring and stack emissions sampling demand a filter medium that withstands the thermal and chemical conditions at your collection point — the material properties described above define the operating envelope for your application. Under these conditions, cellulose nitrate's dimensional stability through autoclaving at 121°C means your membranes maintain their rated pore structure and physical dimensions from pre-sterilization through final analysis, supporting method reproducibility. Make the decision for consistency and reliability, ensuring that your laboratory maintains its reputation for high-quality, error-free output.
For more information about chemical compatibility, please review our Chemical Compatibility Chart.
- Bubble Point (psi)
- 53.6psi
- Color
- white
- Diameter
- 142mm
- Extractables
- low
- Filtration Area
- 158.37cm²
- Flow Rate
- 20ml (Water)
- Grid (Yes/No)
- No
- Material
- Cellulose Nitrate (CN)
- Maximum Operating Pressure
- Holder-dependent
- Maximum Operating Temperature (°C)
- 80°C
- Membrane Thickness (µm)
- 105–140um
- Pack Count
- 25
- pH Range
- 4-9
- Pore Size (µm)
- 0.2
- Sterility
- Nonsterile
- Sterilization
- Autoclavable at 121°C for 30 mins
- Support Material
- None
- Wettability
- Hydrophilic
- Microscopy Examination - Particles remain on the membrane surface for direct visual inspection, supporting identification and classification.
- Water Quality Testing - Narrow pore distribution retains indicator organisms consistently for regulatory compliance in environmental laboratories.
- Bioburden Monitoring - Surface retention keeps captured organisms accessible for direct incubation and enumeration without transfer steps.
- Gravimetric Particulate Analysis - Dissolves in organic solvents for complete particle recovery and accurate weight-based quantification.
- Biochemical Assays - High protein-binding capacity effectively immobilizes macromolecules, supporting lateral flow and diagnostic testing.
- Colony Enumeration - Gridded surface variants facilitate accurate plate counting of captured microorganisms under standard magnification.