Petri Dishes Feature: 60mm,90mm,150mm Petri DishesFeature:1.Φ60mm x 14 mm--with 3 vents2.Φ90mm x 14mm--1 room,3 vents// 2 room,3 vents// 3 room,3 vents// 4 room,3 vents3.Φ150mm x 14 mm-- with 3 vents4.material:polystryrene5.Sterile:by EO GPD0515-011 Petri Dishes