Material: Tin plate
Diam. of lid:70mm
Fits all Regular Mouth jars
0.2 Micron PTFE Syringe Filter & 20mm Self Healing Injection Ports
Lid comes with self healing injection port for injecting mushroom culture and a PTFE syringe filter to avoid contamination .
These lids can be used in a microwave, pressure cooker or autoclave.
Pro grade autoclavable regular mouth jar lids are lab-quality, and made especially for liquid culturing .
Leave lids a quarter turn loose while in pressure cooker to allow for air to escape, otherwise injection ports will pop out.
Second gen. 6Pcs Regular Mouth (Dia:70mm) Mason Jar Mushroom Cultivation Lids
Lids fit Regular mouth BALL mason quart jars.
Metal lid comes with a rubber self healing injection port, and a pro quality .22 micron filter
Autoclavable and reusable. Used for Mushroom Liquid /Spawn Cultivation