Description Optically transparent petri dishes made of High quality plastic for intensive use. Ethylene oxide sterilization, ventless, with cover, smooth surface and better transparency. Sterile design for laboratory use. Laboratory tests for medicine, biology, science and other research are suitable for general education, bacterial laboratories, science laboratories and mycology research. They are also very suitable for school-aged children. , Science Kids Birthday Party, Bacteria Lab Microscope Science Class, Chemical Engineering, Mark the experiment number at the bottom of each Petri dish. If the lid is separated, the culture can still be identified. Store upside down to avoid condensation on the Petri dish lid. Color: transparent. Clear lid allows contents and conditions to be marked externally to measure growth. Round shape. Size: approx. 90 x 15 mm (diameter x height) Cultivate fungi, bacteria and other microorganisms. Science experiments for kids are designed to monitor the growth of plant seeds in different contents and environmental conditions, so your children can feel that professional scientists have their own petri dishes! Perfect for science themed birthday and graduation parties! Very suitable for microscope science, art projects, Halloween celebrations, mycology research Children's accessories, independent transparent window design, easy to grip, no more dust. Package Included : 20 x plastic petri dishes Reward: 20 disposable transfer packs for 3ml pipettes, more value! Transparent and flexible plastics are ideal for transferring, mixing and measuring liquids. hint: Label the bottom of each petri dish with the experiment number. If the lid is separated, the culture can still be identified. Please note that these petri dishes are empty and do not contain nutrient agar. There may be some smell when you receive the goods, because it is original, and the smell will disappear after a few days in a ventilated place. Since the measurement method varies from person to person, there may be a difference of 1-2 cm.