ETEST

Novel Antimicrobial Gradient Technique
Etest is a unique patented antimicrobial gradient technique. Essentially, 15 reference MIC dilutions of an antibiotic have been repackaged with innovative dry chemistry technology onto a plastic strip. The predefined gradient provides precise & accurate assessment of antimicrobial activity against both fastidious & non-fastidious microorganisms.

The procedure is straightforward. The reagent strip is placed onto the surface of an inoculated agar plate. A stable & continuous antibiotic gradient is formed beneath the strip. After incubation, the resulting inhibition ellipse intersects the scale at the MIC i.e. Minimum Inhibitory Concentration in ug/ml. Unlike most susceptibility tests today, Etest is a macro method that can be easily adapted to conditions optimal for resistance detection.

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