Things You'll Need
- 1 salmonella test strip
- 5 ounces soy peptone or salmonella enrichment broth
- Syringe
- Test tube or small jar with lid
- 1 plastic freezer bag
- 10 ml tetrathionate or hajna broth
Instructions
Place the chicken feed sample in the freezer bag and pour the soy peptone or salmonella enrichment broth in the bag. Place it in an oven or incubator set to 110 degrees Fahrenheit for five hours.
Take one milliliter of the broth from the bag with the syringe and squirt it into one of the test tubes or small jars.
Add 10 milliliters of tetrathionate or hajna broth to the jar or test tube with the broth sample and close the lid. Place the jar in an oven or incubator at 110 degrees Fahrenheit for 12 hours.
Place the test strip in the jar or test tube and wait 10 minutes. The test strip will likely have a control line that will show up regardless of the test results. If only this line shows, the results are negative for salmonella. If two lines show, the results are positive for salmonella. If no lines show up, the test is invalid and should be taken again.