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.