Six glass petri dishes These are actually used items. Small scratches and cracks are visible, but they are still usable. Diameter: 5.5cm Height: 1cm These are small petri dishes. The color of the glass has changed slightly due to the chemicals that were in them. I would like to sell them as a set of 6, and I'd prefer not to sell them individually. They are not the type with lids. Please understand all of the above.