Quoting Mic tets

To determine MIC by dilution methods, antibiotics are also needed in a substance that requires preliminary dissolution to obtain a stock solution and then dilution to obtain an appropriate starting concentration. For most antibiotics, water is both a solvent and a diluter, including for most beta-lactams, fluoroquinolones, and aminoglycosides. Some require alcohol as a solvent, especially macrolides, chloramphenicol, and rifampicin, while others require a phosphate buffer or dimethyl sulfoxide DMSO. Get more information https://sorrel-swam-dr3gbz.mystrikingly.com/blog/how-to-record-audio-on-mac