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Sterile Cellulose Nitrate Membrane Filters

Get the latest ready-to-use, sterilized and individually packed Cellulose Nitrate (CN) Membrane Filters and cut down on preparatory time, securely and reliably. Our dispenser-ready sterile membranes can be used for colony counting, particle testing, microscopy and sterility testing. Choose between gridded or non-gridded single-packed sterile membranes, with or without a hydrophobic edge. 

Top Features of Cellulose Nitrate Membrane Filters:

  • Outstanding recovery rates for microorganisms 
  • Three colors and various pore sizes Effective retention 
  • Sterile and single packed

Popular Applications for Cellulose Nitrate Membrane Filters:

  • Environmental contaminant checks
  • Water purification testing
  • Food content and quality control (QC)

Item no.:  11406--47----ACN

Price:  $140.00

 

Sterile, gridded membrane filters are widely used for routine microbiological quality control (QC). Whether single-packed or dispenser-ready, our membrane filters are ready-to-use. This offers the highest security while saving preparatory time. 

Cellulose membrane filters (mixed cellulose ester) contain a mixture of cellulose nitrate and cellulose acetate, a material that assures effective retention combined with high flow rates and optimal colony growth. The various filter colors allow the best possible contrast to the colonies for easy and reliable quantification and identification.   

Great Recovery Rates 

The 0.45µm pore size is the preferred choice for optimal microbial recovery, as demonstrated by comparison of different recovery rates on different pore size combinations. Studies have confirmed the standard 0.45µm pore size is the most appropriate for general microbiological purposes.  

The 0.45µm filters give the most consistent recoveries across various test systems and do not allow passage of standard 0.22µm sterilizing filter challenge microorganisms under typical filtration conditions. The flow rate of this pore size is optimal for both the retention and recovery of microorganisms.

Sterile and Gridded

Each Cellulose Nitrate (CN) Membrane Filter is sterile and gridded for better identification, there is no need to clean beforehand, significantly reducing preparatory time. This also decreases the chances of human error and accidental tampering which can lead to variations in results. Each envelope containing a Cellulose Nitrate (CN) Membrane Filter is also marked with a unique filter identification and lot number, so you don’t lose track of which filter belongs to which test.

Dimensions

  • Filter Diameter
    ⌀ 47 mm
  • Hydrophobic Edge
    None

Physicochemical Information

  • Pore Size
    0.45 µm

Product Information

  • Pack Size
    100
  • Packaging
    Sterile, individually packed
Microsart® Funnel 250
Item no.
16A07--25------N

$175.00

Microsart® Funnels allow quick performance of the filtration steps required in the routine microbiological analysis of water, food and beverages, pharmaceutical and cosmetic products. A Sartorius gridded membrane filter is placed on a stainless steel filter support and a Microsart® Funnel is simply mounted by clicking it on. The funnels, available for various sample volumes, are made of polypropylene and are thus elastic enough to ensure optimal sealing with a click-fit closure.

Microsart® Funnel 100
Item no.
16A07--10------N

$159.00

Microsart® Funnels allow quick performance of the filtration steps required in the routine microbiological analysis of water, food and beverages, pharmaceutical and cosmetic products. A Sartorius gridded membrane filter is placed on a stainless steel filter support and a Microsart® Funnel is simply mounted by clicking it on. The funnels, available for various sample volumes, are made of polypropylene and are thus elastic enough to ensure optimal sealing with a click-fit closure.

Tweezers, stainless steel

$44.00

Membrane filters should be handled with tweezers to avoid possible contamination by hand contact. Sartorius stainless steel tweezers are flammable and autoclavable. The gripping surfaces are flat and rounded for gentle, firm hold of the membrane filter.