NEWupdatedversion

The filter is fixed to the lid using the Ruhr interface, does not require glue and is healthier without chemical composition.

Our professional grade autoclavableRejular andwide mouth jar lids are built to be lab-quality, and made specifically for liquid culturing.

Our lids feature super heavy duty medical grade self-healing syringe injection ports, and we seal each hole with high temperature silicon. Liquid Fungi lids last twice as long as our competitors. Each lid comes with a reusable silicon gasket ring for an airtight seal.

This type of lid must be left a 1/4 turn open when pressure cooking, and fully tightened when cooled.

Set of 6 mason jar lids for making mushroom liquid cultures. The polypropylene lid features a rubber self healing injection port, a high quality .22 micron filter and a silicone gasket to unsure a tight seal. Leave the lids a quarter turn loose while in the pressure cooker so air can escape, otherwise the injection ports will pop out. These lids can be used in a microwave, autoclave or pressure cooker.