I was catching up on some cleaning the other day and came across a Better Bottle with some mold. I usually fill my carboys after rinsing them with warm-hot oxyclean solution and let them soak overnight or two, etc. Apparently I forgot about this one and didn’t rinse it as well as I should, because in the neck of the bottle was a nice disc of mold the width of the neck. And did it smell bad. :-[
I dumped the solution (and the mold) , rinsed several times and then stuck it on my carboy cleaner with hot oxyclean for about 40 minutes. After rinsing with fresh water 2-3 times, it doesn’t smell anymore and looks clean.
Do you think I can assume it is clean and no mold spores are living in it after all that? Since it’s a better bottle, I really can’t hit it with flame or extremely hot water to sterilize it.
1 tab / gallon isn’t enough to be used as a sanitizer. To sanitize equipment with sulfites, use 2-3 Tablespoons of sulfite per gallon, preferably also with 3 Tablespoons of citric acid. That’s 30-45 grams and 1 campden contains 0.55 grams.
Bleach (sodium hypochlorite) will not effect polyethylene (HDPE). I would hit it with bleach and give it a good rinsing. Both Clorox Cleaner with Bleach and Clorox Bleach, itself, are sold in HDPE containers.