This extra-deep 100 x 25mm stackable Petri dish accommodates extra media volume, which allows longer culture periods. It is molded from medical grade virgin polystyrene, with optically-clear top and bottom viewing surfaces. It has ventilation ribs that allow for free air circulation and reduce condensation during incubation, with a constant flatness that allows for even media distribution. The flared lid skirt and squared corners offer easy one hand operation, especially with gloves. This disposable, single-use Petri dish is radiation sterilized and the contents are sterile if the packaging sleeve is unopened. It is traceable by lot and sku number, and Certificate of Sterilization Processing and Certificate of Compliance are available upon request. Ideal for seed germination testing. Media not included. Packed in sleeves of 17 dishes. Disposable. Sterile. Material: Polystyrene. Color: Optically Clear. Rim Feature: Stackable. Dish Feature: Extra Deep. Style: Mono. ISO Mark Target: No. Nominal Size: 100 x 25mm. Kord-Valmark™ #: 2900.