Evaluation of the Quantum II Microbiology System for bacterial identification.

The Quantum II Microbiology System correctly identified 250 (89.6%) of 279 gram-negative bacilli from clinical specimens. There were 13 (4.7%) errors in genus identification and 7 (2.5%) errors in species identification; another nine (3.2%) isolates yielded biochemical reaction patterns which were not in the file of the system. Total test time per isolate, excluding inoculum preparation and incubation, was ca. 1.5 min.