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Hardy Diagnostics Nitrocef Disks™ are intended for use in the rapid testing of isolated colonies of Neisseria gonorrhoeae
Moraxella (Branhamella) catarrhalis
Staphylococcus spp.
Haemophilus influenzae
Enterococcus spp.
and some anaerobic bacteria for the production of beta-lactamase
Nitrocef Disks™ should appear as 0.25 inch (in diameter) filter paper disks imprinted with ß
and white to yellow in color
A positive beta-lactamase result is recorded when the Nitrocef Disk™ changes in color from its original yellow to orange or red
Most positive bacterial strains will produce a color change within 5 minutes
Some staphylococci