Fluorocult media and positive indole reaction. Rapid identification of Escherichia coli by

incubatedfor18to20hat35°C. Fluorescencewasvisualizedat 366 nmin a dark chamber.For all strains investigated, the specificity of FluorocultColumbiaagarwas98.9%, dependingonthe fluorescence ofMUGalone. Fluorescenceandapositive indole reactionledto a specificity of99.8%.In 9 ofthe 23 Pseudomonas aeruginosa strains, atypicalgreen fluorescence appeared, clearly different fromthe bluefluorescence produced by E. coli. On Columbia agar,