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Microfunnel Filter Funnels

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Choose the Easiest-to-Use, Disposable Filter Funnels Available

MicroFunnel Filter Funnels Provide Quality Assurance when Testing for Microbial ContaminationMany of the ubiquitous microorganisms in our enviromnent have simple requirements for growth that can be met by a range of aqueous solutions. If left unnoticed, microoganisms can result in spoilage of procucts, causing a significant economic loss to the manufacturer. MicroFunnel™ filter funnels provide quality assurance when testing for microbial contamination.

MicroFunnel filter funnels can be used with the MF Technique to test any aqueous sloution for microbial contamination. Choose from 100 and 300 mL sizes in the widest range of filter funnel configurations and membrane options available. New MicroFunnel filter funnels include the "ST" version for sterility testing within isolators, and the "Plus" version that combines sample cup and filter funnel in one product. 

Special Features

Easier to Use

A simple squeeze separates funnel from the base to access membrane. 

Disposable

Increases the productivity and efficiency of busy laboratories that do not have time to clean and sterilize reusable hardware.

Certified

Each lot is certified for microbiological analysis to provide added assurance of reliable results.

Easy and Accurate Sample Measurement

The 100 mL increment is marked completely around the funnel for higher visibility.  

Reliable Results

Individually bagged, disposable filter units prevent cross-contamination of samples.

Ready to Use

Preassembled and sterilized by gamma irradiation to eliminate the potential for toxic extractables associated with EtO sterilization.

Applications

  • Quality control in pharmaceutical production
  • Convenient for last minute samples at the end of the day
  • Test for a variety of bacterial contaminants
  • Identify yeasts, molds, and other organisms
  • Monitor hot loop water samples
  • Alternative to closed-system sterility testing

Standard Procedures Using MicroFunnel Plus Filter Funnels

Filtering Ambient Samples


 1.  Carefully remove the vented lid and collect the sample.
 2.  Securely snap lid in place to prevent sample loss. Transport
      sample to laboratory for filtration.
 3.  Remove plug or vent tab from base, place funnel directly onto
      manifold and filter the sample.
 4.  Gently grasp funnel then remove and discard lid.
 5.  Release cylinder from base by firmly squeezing the midpoint of
      the cylinder.
 6.  Remove the membrane, plate the filter, and incubate.

Filtering Hot Water Samples

 1.  Place funnel into holder with graduations visible through the
      viewing slot. Carefully remove the vented lid and collect the
      hot water sample.
  2.  With funnel and holder resting on a firm, level surface, securely 
       snap lid in place to prevent sample loss. Remove funnel from 
       holder and transport sample to laboratory for filtration. 
       (go to steps 3-6, same as for ambient water).
Note: When using this product for sampling hot water loops, observe safety precautions which include the use of insulated rubber gloves, safety glasses, and Pall Life Sciences Funnel Holder for critical sample sites (PN 4824 for 100 mL funnels and PN 4825 for 300 mL funnels).

Procedures for MicroFunnel LP

  1. Dispense the contents of an ampoule of culture medium onto the absorbent pad in the Petri dish lid kit, supplied only with MicroFunnel LP, Product No. 4810.
  2. With Petri dish lid kit removed, perform filtration then access membrane by gently squeezing near the top of the funnel cylinder.  
  3. Remove the membrane filter from the base with forceps. Place the membrane filter onto the broth-soaked absorbent pad in the Petri dish lid kit. Cover, invert, and incubate.

Reference Material

  • Performance Guide, MicroFunnel Filter Funnel, PN 33254
  • Product Data, MicroFunnel Filter Funnels, PN 32969
  • Technical Report, Validation of Pall Life Sciences MicroFunnel Filter Funnels, PN 33147
  • Technical Report, MicroFunnel Filter Funnel Culture Media Loading Method Comparison, PN 32978
  • Validation Guide, MicroFunnel ST Filter Funnel Validation of Suitability for Sterility Testing Applications, PN 33235
  • Product Data, MicroFunnel ST Disposable Testing Funnels, PN 33232
  • Technical Report, MicroFunnel ST Filter Funnel for Sterility Testing Applications Technical Report, PN 33231
  • Product Data, MicroFunnel Plus Filter Funnel, PN 33237
  • Technical Report, Membrane Filter Technique, PN 32860

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