Antimicrobial Testing >> Determining the Activity of Incorporated Antimicrobial Agent(s)
Determining the Activity of Incorporated Antimicrobial Agent(s)
· ASTM E 2149
ASTM E 2180, Standard Test Method for Determining the Activity of Incorporated Antimicrobial Agent(s) in Polymeruc or Hydrophobic Materials
This test method is designed to evaluate quantitatively the antimicrobial effectivness of agents incorporated or bound into or onto mainly flat hydrophobic or polymeric surfaces.
An agar slurry is used as inoculum. It reduces the surface tension of the saline inoculum carrier and allows formation of a "pseudo-biofilm", providing more even contact of the inoculum with the test surface.
This method can confirm the presence of antimicrobial activity in plastics or hydrophobic surfaces. It allows determination of quantitative differences in antimicrobial activity between untreated controls and treated samples.
By testing both washed and non-washed samples the longterm durability of the treatmen can be evaluated
Untreated and treated samples are run at minimum as triplicate samples. Sample size is 3.0 x 3.0 cm. Customers need to send in sufficient cut specimens for the untreated control as well as the test sample.
Test organism are recommended but choice of organism should be relevant to the environment in which the product will perform.