Z8 bacteriostatic circle (antibiotic potency) measuring instrument is used for antibiotic microbial testing

Antibiotic tube-dish determination method uses antibiotics to spread spherically in the solid medium spreading specific experimental bacteria to form a spherical area containing a certain concentration of antibiotics, which inhibits the propagation of experimental bacteria and presents a transparent zone of inhibition. According to the antibiotic in a certain concentration range, the logarithmic dose has a linear relationship with the diameter (area) of the bacteriostatic circle. potency. This article summarizes the main points that should be paid attention to in the process of antibiotic potency verification based on practical work experience.

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