Anaerobic Jar LAJ-A11 Labtron Anaerobic Jar 2.5 L capacity features a transparent PMMA design with a smooth surface and high-quality O-ring for airtight sealing. It holds 12 Petri dishes 90-100 mm and uses 1-2 gas packs to create anaerobic conditions in 2-4 hours. Equipped with a durable stainless steel clamp, quick snap-shut coupling and easy cleaning with alcohol, it ensures efficient and reliable anaerobic cultivation.