Looks like Steve covered the Colloidal topic below in detail. Just wanted to say the few times I purchase colloidal from someone that had the generator to make it they always wrote on the bottle Do not take around SELENIUM and also to keep the bottle away from any electronics. The maker of the colloidal wrote on the bottles to keep 4 Hours away from any Selenium intake but that's just what we were told. Looks like Steve has a good write up on Colloidal for you.