These heavy-duty stainless steel North Spore mason jar culture lids are engineered to last. Their durable design and 304 stainless steel construction make them rust and corrosion resistant and superior to regular mason jar lids. And each pack of 6 culture jar lids includes 10 filters and 10 injection ports.

These culture jar lids are easy to clean and come with two pre-drilled ports and a fitted inner silicone ring. Lids are autoclavable, dishwasher-safe, and designed for hundreds of runs through the autoclave or pressure cooker. Lids and seals are phthalate-free, PVC-free, lead-free, BPA-free, reusable, and recyclable.

*Glass jar not included.