35mm Petri Dish, Triple vented for improved gaseous exchange. 35 x 10mm High quality petri dishes. Manufactured from crystal polystyrene for optimal analysis by microscopy Our petri dishes have exceptional optical clarity and heat resistance. Temperature range for application -20°C to 60°C Easy stacking. LM008 – 35mm Petri Dish, Vented. Supplied in packs of 740 petri dishes. Inner stacked sleeves of 10 dishes.