Test Method for Evaluation of EN 17272 Automatic Airborne Disinfection System

Material Testing

Test Method for Evaluation of EN 17272 Automatic Airborne Disinfection System

EUROLAB laboratory provides testing and compliance services within the scope of EN 17272 standard. The EN 17272 standard is used to evaluate the disinfectant effectiveness of airborne surface disinfection processes under specified experimental conditions.

Test Method for Evaluation of EN 17272 Automatic Airborne Disinfection System

A chemical product is dispensed in a room (or confined space) in the form of gas, vapor and/or aerosol (other than steam) by an automatic device, that is, in the absence of anyone. The process will disinfect the surfaces, not the air in the room. The method is not suitable for handheld devices due to safety considerations.

EN 17272 consists of two parts that must be done for each product and device:

Efficacy Testing: To ensure that the minimum efficacy requirements are met for each type of claim, e.g. bactericide, fungicide, for each relevant field of application such as medical, veterinary, food, industrial, domestic and institutional. (minimum is bactericidal and yeasticidal for all areas).

Deployment Test: specifies the test method to evaluate the process throughout the enclosure. It is performed with only one organism (staphylococcus aureus) in four sampling positions.

The test results obtained show the combined efficacy for a product and a device. According to a test result, a request cannot be made for more than one device with a single product or for more than one product with a single device. A separate test should be performed for each device with each product.

Details are defined in the standard for test organisms, temperature, contact time, clean/dirty conditions and are site specific.

There are two sizes of test enclosure/chamber mentioned, namely a large enclosure of 30m3 to 150m3 or a small enclosure of 0,25m3 to 4m3.

Stainless steel discs are inoculated with a mixture of test organism and soil, then dried. They are placed in locations around the room at a certain distance from the device,

Great Enclosure

Three discs per organism, at a height of 1-1,5 m from the ground, facing vertically away from the device.

Small Enclosure

Vertically facing away from the device, height half the average height of the enclosure, three discs per organism.

The device is prepared with appropriately diluted product and opened. Contact time is measured from the initial release of the product to the point at which carriers are recovered. A ventilation period may be required, this will be based on the manufacturer's instructions and risk assessment for discs to be recovered.

The discs are removed, the product is neutralized and any remaining organisms are recovered. Calculations are then performed and log reductions are recorded. Depending on the region and organism, the log reduction required is between 3 and 5.

For example, for food, industrial, domestic and institutional areas, a 5 (99,999) log reduction is required for bactericide claim; For medical fields, a 4 (99,99) day reduction is required for virucidal claim.

EUROLAB, with its more than 25 years of experience, state-of-the-art accredited laboratories and expert team, helps you get precise and fast results.

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