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Cellulose Acetate Membrane Filters

Source: Sartorius

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Cellulose acetat membranes combine high flow rates and thermal stability with very low adsorption characteristics.

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Brochure: Sartorius Microfilters

Cellulose acetat membranes combine high flow rates and thermal stability with very low adsorption characteristics and are therefore excellently suited for use in pressure filtration devices. The membrane with 0.2µm is the filter of choice for sterile filtration of aqueous solutions, such as nutrient media, buffers and sera. The results of publications on adsorption are difficult to correlate, as mostly different test substances, conditions and detection methods were used, and the membranes were tested without previously being sterilized.

The membrane filters with pore size 0.2 µm also allow complete retention and reliable recovery of extremely small water-borne microbes in pharmaceutical applications. The 5.0 µm membrane is used for the coarse particle filtration in samples where a low adsorption is required. The 1.2 µm membrane is used for the particle filtration in samples where a low adsorption is required. The 0.8 µm membrane is used for the particle filtration in samples where a low adsorption is required. The 0.65 µm membrane is used in many applications for the reduction of the particle content without losing ingredients by adsorption. The 0.45 µm membrane is a very convenient filter type for the reduction of particles and microorganisms in aqueous solutions such as nutrient media, buffers, sera and similar samples. All the membranes are excellently suited for use in pressure filtration devices.

Cellulose Acetate Membrane Filters Applications & Features:

  • Detection of the total bacteria count in samples that contain disinfectants, antibiotics or other inhibitors.
  • The hydrophobic edge prevents the diffusion of inhibitors into the membrane and protects from reduced growth.
  • Provides optimal growth characteristics for microorganisms, and absolute retention of all bacteria.
  • Particle reduction of liquid samples where no non-specific adsorption can be tolerated. Prefiltration of water with a high particle load, of media and similar samples.
  • Prefiltration of water, culture media, solutions containing antibiotics or proteins, particle filtration of many samples where non-specific adsorption is not desired.
  • Microbe-retentive, particle-removing filtration of nutrient media, water and solutions containing antibiotics or proteins; sterility testing, colony counting.
  • Sterile filtration of water, culture media, solutions containing antibiotics or proteins, cell harvesting.
  • Very low non-specific adsorption
  • Excellent thermal resistance
  • Validated using Brevundimonas dimimuta
  • Minimum loss of proteins, preservatives etc.
  • Autoclavable at 121°C or 134°C
  • Dry heat sterilization possible
  • Reliable sterile filtration

 

Click Here To Download:
Brochure: Sartorius Microfilters

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