*Inner diameter 82mm 

*Autoclavable 

*Leak proof and airtight 

*10 pieces 

These twist off lids are perfect for growing liquid culture because air exchange is small and contamination rate is very low. Mycelium grows little slower than with gas exchange filter but other hand you can preserve your liquid culture in room temperature much longer, up to 6 months or even more. You can turn your jars upside down and shake them as much as you want, no leak at all.