HardyCHROM UTI is a non-selective chromogenic medium recommended for the cultivation, differentiation and enumuration of urinarytract pathogens based on colony colour and morphology with only a minimum of confirmatory tests.
HardyCHROM UTI can be used to differentiate betweenbetween E.coli and Enterococcus spp. with no further testing needed, based on their characteristic colour reactions.
E. coli produces medium rose to magenta coloured colonies
Enterococcus faecalis produces small, teal to turquoise coloured colonies
Pseudomonas spp produce colourless to light yellow-green translucent colonies
Klebsiella, Enterobacter and Serratia spp produce large deep blue to dark indigo colonies
Proteus, Morganella and Providencia spp produce clear to light yellow colonies with a diffuse golden-orange halo in the medium
S. saprophyticus produces opaque, pink coloured colonies
S. aureus produces opaque, cream to white coloured colour