Value Caps 6 Liquid Culture Mason Jar Lids Wide Mouth for Mycology;

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. They fit wide mouth mason jars. Mason Jars are NOT included. These are a value version of my other liquid culture lids and are made with a cheaper generic brand lid.