Grain Spawn Jar Lids
Regular canning jar lids or pp5 plastic canning jar lids. If you are using a regular canning jar lid, flip the lid upside down so the seal portion is facing up preventing it from sealing to the jar. This is important when removing the lids. If the jar lid seals to the jar, it will create a vacuum and suck air into the jar when removing the lid and possibly cause contamination later on. It will also allow a small amount of fresh air exchange.
Materials
- canning jar lid and ring or pp5 plastic canning jar lid
- small hand-held hole punch or Drill and drill bit
- Micropore tape
- *self-healing injection port or syringe filter if desired not necessary
Procedure
. depending on the size of jar you will be using, 500ml-1000ml or 1L. It will need 1 hole for a 500ml jar for air exchange or 2 holes for a 1000ml jar use your handheld paper hole punch to make the holes on opposite sides of the lid.
. cover your holes with micropore tape on the side with the sealing ring, this will be the side facing up on the outside of the jar.
. add a self-healing injection port and alternatively to the micropore tape holes syringe filters. * If desired.