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What is the NF T 72-281 standard and which germs are tested?

The NF T 72-281 standard is a French standard which allows to determine the bactericidal, fungicidal and sporicidal activity for the disinfection of surfaces by air. The test is carried out in an independent laboratory, which must be COFRAC accredited.

Testing process for the NF T 72-281 standard

It consists of positioning the machine (the diffuser) in the middle of an airtight room and then placing stumps behind the machine at different locations to check that the disinfectant propelled reaches all surfaces in contact with the air in the room. No flow rate is required by the standard, IBL Specifik obtained results above the requirements of the standard with a flow rate of about 8ml/m3. At the end of the diffusion time, for the AIRBIO/APABIOAt the end of the diffusion time, for the AIRBIO/ couple, a contact time of 2 hours is required to obtain results similar to those obtained during the passage of the standard.

The germs tested are as follows:

Bactericidal activity: Pseudomonas aeruginosa (CIP 103-467), Staphylococcus aureus (CIP 4.83), Enterococcus hirae (CIP 5855), Escherichia coli (CIP 54127)
Sporicidal activity: Bacillus subtilis spores (CIP 52 62)
Fungicidal activity: Candida albicans (IP 4872), Aspergillus niger (IP 1431-83)
Yeast-killing activity: Candida albicans (IP4872)

For more information on this standard, you can consult theAFNOR website.

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SUMMARY

NF T 72-281 is a French standard that establishes a method for evaluating the antimicrobial activity of materials and surfaces in hospital and similar environments. It describes methods for testing the effectiveness of antimicrobial products on surfaces using a suspension test method.

The germs tested in this standard are as follows:

  1. Staphylococcus aureus: a bacterium that can cause skin infections, respiratory tract infections and bloodstream infections.
  2. Enterococcus hirae: a bacterium that can cause urinary tract infections, bloodstream infections and other infections.
  3. Escherichia coli: a bacterium commonly found in the intestine, but which can also cause urinary tract infections, intestinal infections and other infections.
  4. Pseudomonas aeruginosa: a bacterium that can cause skin, respiratory, urinary tract and other infections.

In summary, the NF T 72-281 standard evaluates the antimicrobial effectiveness of materials and surfaces against these four types of germs.