Carolina 3M Petrifilm Aerobic Count Plates - Manual (Page 3)

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Figure 1
Directions for Use
Use sterile technique when handling Petrifilm plates. Disinfect the work
area by wiping throughly with alcohol or other disinfectant before and after
use. Used Petrifilm plates may contain viable organisms. Do not open the
plates unnecessarily.
Method A. Inoculation with liquid sample
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.
2. Place the Petrifilm plate on a level surface, with the grid side down. Lift
the top film (fig. 2).
Figure 2