This technology evaluation pack contains eight micro-molds, one of each of the designs for casting 3D Petri Dishes®. Four from the 12 well series (12-256, 12-81, 12-60TR, 12-36TO) and four from the 24 well series (24-96, 24-35, 24-24TR, 24-H). (8 micro-molds per pack)