Quantity:6pcs
Colour:green
Lid Material:food grade Polypropylene
Lid diameter:70mm
Fit for all Regular Mouth Mason Jars
The second generation Lid comes with a self healing injection for injecting culture and a PTFE syringe filter for avoid contamination without glue,more healthy for mushroom growing.
These lids can be used in a microwave, autoclave or pressure cooker.
Our professional grade autoclavable regular mouth jar lids are built to be lab-quality, and made specifically for liquid culturing .
Leave the lids a quarter turn loose while in the pressure cooker so air can escape, otherwise the injection ports will pop out.