Petri dish

A Petri dish comprising:

• a dish body having a bottom wall and a side wall which extends along an outer circumference of the bottom wall, the bottom wall and the side wall of the dish body forming an upper opening space adapted to accommodate cultures;
• a dish lid adapted to cover the upper opening space from above the dish body, the dish lid having a top wall and a side wall which extends along an outer circumference of the top wall, the dish body and the dish lid being two independent members that are detachable;
• a ring for gripping formed on an outer side of the side wall of the dish body that extends circumferentially, wherein the ring for gripping has an outer diameter larger than an outer diameter of the dish lid;
• and
• a plurality of upwardly extending protrusions distributed on the ring for gripping,
• wherein, when the dish lid is closed on the dish body, a lower end of the side wall of the dish lid is located between the side wall of the dish body and a first portion of the plurality of protrusions, and the lower end of the side wall of the dish lid is spaced in a vertical direction from the ring, with a second portion of the plurality of protrusions being located between the lower end of the side wall of the dish lid and the ring.