... cell cultudish is made of PS, featured with easy-grip rim and non-treated ring. High quality, gamma ... culture petri dish is designed with easy-grip serrated edge for easy fetch,Frosted circle on the base ... attachment on the edge,WHB petri dish provide 6 vents for air exchange,4 half circles at ... .Numeric Scale 12, 3, 6, 9 divides petri dish Into quadrants for easy identification,Package: 10 pcs/sleeve ...