TABLE 1.
Quality control testing of CHROMagar Orientation used for the evaluation
| Test microorganism | Mean colony count (CFU) ± SD with:
|
Pa | |
|---|---|---|---|
| Reference mediumb | CHROMagar Orientationc | ||
| E. coli ATCC 25922 | 174 ± 98 | 166 ± 47 | 0.511 |
| K. pneumoniae ATCC 13883 | 210 ± 77 | 230 ± 99 | 0.747 |
| P. aeruginosa ATCC 27853 | 138 ± 15 | 128 ± 11 | 0.084 |
| P. mirabilis ATCC 4630 | 110 ± 34 | 128 ± 43 | 0.132 |
| S. aureus ATCC 25923 | 129 ± 69 | 132 ± 68 | 0.219 |
| E. faecalis ATCC 19433 | 168 ± 69 | 174 ± 75 | 0.468 |
a
No significant differences were found between CHROMagar Orientation and the reference medium (P > 0.05 [paired t test]).
b
The reference medium was TSA plus 5% defibrinated sheep blood. The inoculum was diluted to an estimated concentration of 102 CFU/ml. Four batches were tested.
c
The inoculum was diluted to a concentration of 102 CFU/ml. Seven batches were tested.