Bactident Oxidase Test Strips (catalogue No. 100181) are ready-to-use strips to detect the presence of cytochrome oxidase enzyme in microbial cultures. The change to blue/blue-violet colour indicates oxidase-positive organisms. These strips are used in microbiological identification workflows in food, environmental and clinical laboratories.
Bactident™ Oxidase Test Strips (catalogue No. 100181) are ready-to-use diagnostic strips supplied by MilliporeSigma / Merck for semi-quantitative detection of cytochrome oxidase activity in microorganisms. Cytochrome oxidase is an enzyme present in certain Gram-negative bacteria that catalyses oxidation of the cytochrome c substrate. In the presence of molecular oxygen, the enzyme catalyses reduction of the testing reagent and produces a characteristic colour change from blue to blue-violet on the strip indicating oxidase-positive organisms. These strips provide a simple, rapid biochemical test for use in microbiology laboratories for bacterial classification and identification.
Advantages
- Rapid visual detection of cytochrome oxidase activity without instruments.
- Ready-to-use strip format facilitates quick microbial screening.
- Useful in bacterial classification workflows in food, environmental and clinical microbiology.
- Compact, disposable design suitable for routine laboratory use.
Technical specifications
| Format | Test strips (50 strips/pack) |
| Analyte | Cytochrome oxidase enzyme activity |
| Detection method | Visual colour change (blue to blue-violet) |
| Typical applications | Bacterial classification and identification in microbiology |
| Compatible samples | Microbial cultures |
| Storage conditions | 2–8 °C (recommended to maintain reagent stability) |
