Injection Port

Make your own injection port lids out of canning jar lids.   Insert a sterile liquid culture syringe through the injection port to expand your culture onto sterile grain or more liquid media.

These heavy duty self-healing injection ports have a deep well, with 13 mm diameter opening, 9/16″ across the top and and 9/16″ top to bottom. Drill a 15/32″ or 1/2″ hole in a canning lid and insert.  (It’s best to drill a smaller 1/4″ hole first, then expand to the larger bit size.)

Good for dozens of repeated uses!

Buy a ready-made lid here.