Science Enhanced S&S Biology - Virginia Department of ...

Do not roll top film layer down onto yellow-hatched layer. 17. Press with spreader, ridge side down. Do not twist. 18. Lift spreader. Wait one minute as gel solidifies. 19. Repeat steps 12–18 for each of the other samples. 20. Place each plate in a separate bag. Do not seal: this is an aerobic count. ................
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