6PCS Liquid Culture Lids - Autoclavable 70mm Regular Mouth Jar Lids with Heavy Duty Injection Port for Mushroom Cultivation

Plastic LIDS don't rust mushroom jar chick here Our professional grade autoclavable Rejular and wide 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.