Are the Wheaton 33mm glass media bottles already "pre-sterilized" when you first get them from lab supply or do you have to sterilize yourself also? Thanks in advance to all!
Hi everyone, great board and thanks for all the great info as its a big help. Does anyone know if special filters are needed if using Guaiacol other than standard .2 syringe Whatman filters for small amounts? Anyone with experiences to share? Thanks