Alberto, I've read about this boiling technique but being trained as a microbiologist, it doesn't make much sense to me. Boiling the water and the equipment helps, but doesn't stop the problem. If you want to be perfectly clean, you'd have to boil the container, the lid, the water. The seed coating will probably have inoculum on them already so you need to do a surface sterilization. I suggest a 10% bleach solution + a drop of detergent for a couple of minutes. Then wash out the bleach solution with three good washes with sterile water, all the while working in a containment hood where no microbes can get in. It's a pain. I have never boiled water and some of my seeds sit in the unsterilized dish sometimes for more than a week without any problems. If the seed is bad, it'll get moldy in 3 days. Nhu On Mon, Dec 30, 2013 at 7:43 PM, Alberto <ezeizabotgard@hotmail.com> wrote: > Try boiling the water first and using boiled water to wash the glasses, > jars, etc. >