Injectable Spawn Jar Lid - PP5 - Regular Mouth - 70 mm

These are fantastic! They are fully worth the extra cost for being contamination free. By the way, you really only need a single injection port, you can move the needle around and get a few drops in a circle or just do a single drop, the spread is fast enough! Only question I have is, do I have to cover the tops in foil while they are in the pressure cooker or not? Thank you guys for making mycology a lot easier for the layman.