3
Storage
Refrigerate unopened packages at
≤
8˚C (
≤
46˚F). Use before expiration date
on package.
To seal an opened package, fold the end over and tape it shut (fig. 1).
Figure 1
Keep resealed packages at room temperature and less than 50% relative
humidity. Do not refrigerate opened packages. Use plates from the opened
package within one month after opening.
Directions for Use
Use sterile technique when handling Petrifilm plates. Disinfect the work area
by wiping thoroughly with alcohol or other disinfectant before and after use.
Used Petrifilm plates may contain viable organisms. Do not open the plates
unnecessarily. The procedures in this instruction booklet should be used for
educational purposes only.
Method A. Inoculation with liquid sample
Inoculate and spread each Petrifilm plate before going on to the next plate.
1. If a Petrifilm plate pack has been stored in the refrigerator, let the
package come to room temperature before opening it. This step
prevents condensation from forming inside the package.