Features Package Content: The set includes 10 PCS laboratory glass Petri dishes, equipped with covers, sufficient in quantity for easy use and replacement. Glass Material: the laboratory bacterial culture dish is made of high-quality borosilicate glass, with thick wall, acid and alkali resistance, good stability and long service life. Wide Application: This glass petri dish is widely used in industrial and chemical experiments, scientific projects, interesting exhibition projects, theme parties and classroom activities. Product Specification: The inner diameter of petri dish with cover is 85mm, the inner diameter of base is 94mm, the size is standard, and the sealing is good, so you can use it with confidence. Smooth Surface: These experimental dishes have a flat and smooth surface, allowing cells to grow evenly without caking, providing good protection. Specification: Item Type: Petri Dish Material: Glass Uses: Widely used for science projects, fun exhibition projects, theme parties and classroom activities Upper Lid Inner Diameter: Approx. 85mm / 3.35in Base Inner Diameter: Approx. 94mm / 3.7in Package List: 10 x Petri Dish Bases 10 x Petri Dish Covers Note: This is a glass product, please do not place it on the edge of the high platform to avoid breaking. Package List 10 x Petri Dish Bases 10 x Petri Dish Covers