This Corning round culture dish is manufactured from optically-clear virgin polystyrene with a 2mm bottom grid, and comes with stacking beads to aid in handling. It has an approximate cell growth surface area of 21sq cm, with actual inside growth surface diameter of 51.4mm with a height of 15mm. It is TC-treated for optimal cell attachment, and is supplied with vents to provide consistent gas exchange. Sterilized by gamma radiation and certified non-pyrogenic. Disposable. Sterile. Material: Polystyrene. Dish Style: Petri. Petri Dish Style: 60mm. Top Style: Plain. Surface Treatment: TC-Treated. Cell Growth Area: 21sq cm. Feature: 2mm Grid. Recommended Medium Volume: 4.2 To 6.3mL. Diameter: 51.4mm (approximately). Height: 15mm (approximately). Corning #: 430196.