Regular Mouth lids for canning jars with injection port and breathable waterproof filter 0.22uM. Used for creating grain spawn or liquid cultures in mason jars. Please check your jars for opening around 2.5 inches!
Wide Mouth lids for canning jars with injection port and breathable waterproof filter 0.22uM. Used for creating grain spawn or liquid cultures in mason jars. Please check your jars for opening around 3 inches!