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CA (Cellulose Acetate)

Johnson Test Papers’ CA Syringe Filters are purpose built with features designed to bring the highest levels of performance and purity to your research. CA syringe filters are used for the filtration of volumes of up to 100ml. We incorporate a variety of membranes to offer separation and purification solutions for the majority of your laboratory need. Johnson Test Paper’ CA Syringe Filters are suitable for the filtration of aqueous solutions and for applications requiring maximum sample recovery such as tissue culture preparation, sterile filtration and clarification of aqueous solutions and biological fluids, specimen solutions and protein and enzyme filtration. CA syringe filters combine consistently high flow rates, chemical and thermal stability with very low absorption characteristics. Cellulose acetate syringe filters exhibit very low protein binding, so they are suitable for protein recovery applications.The 0.22 m pore size CA membrane is especially suited for sterilising aqueous solution, buffers, sera and media. They are hydrophilic, making them functional with aqueous and alcoholic media although they have limited solvent resistance.CA syringe filters are also compatible with alcohol and oil. CA syringe filters can also be supplied with the option of a micro-glass fibre pre-filter.

Key Features
  • Naturally hydrophilic membrane filter
  • Low protein binding: suitable for aqueous protein solutions
  • Nitrate free: suitable for groundwater filtration
  • Uniform pore size structure
  • Extensive pore size specification
  • Cell retention and particle collection
  • Resistant to most organic solutions
  • Very high shape stability in aqueous solutions
  • Chemical compatibility: pH 3 - 7
  • Filtration of samples in aqueous solutions and some organic solvents
  • Filtration of water-soluble oligomers and polymers, especially suited for biological macromolecules
  • Cell retention in liquids
  • Light diffusion measurements
  • Sterilisation
  • Filtration of nitrate free spring water
Housing Material PP
Membrane Material Cellulose Acetate
Pore Size 110±10μm
Thickness Small adsorption
Absorption 0.2μm: 340kpa, 0.45μm: 220kpa
Bubble Point (Water) Stable among pH 3-7, better hydrophilicity, great water Flux and better cutoff effect
Chemical Compatibility < 0.2%
Extractable with water 0.2μm: 23mL/min/cm, 0.45μm: 46ml/min/cm
Flow Rate(Water)△P 100Kpa 87
Maximum Operating Pressure(psi) ≤ 50℃
Maximum Temperature N/A
Combi Syringe Filters
Diameter Sterilisation Pack Size Pore Size Product Code
13mm Without 50 0.2μM SFC25P020G
Without 50 0.45μM SFC25P045G
25mm Without 100 0.2μM SFC25P020G
Without 100 0.45μM SFC25P045G