I would like to agree that water quality is absolutely key. I thought I had good water but it wasn't until I bought a water meter that I found that there is a huge range of purity even in steam distilled water. The meter I'm using now is the Hanna PWT that measures in 0 -100 uS, which can be converted to PPM. A lot of the so called pure water I was buying was over 10uS, which produces a slightly cloudy CS. Commercial distillers often use salt to pre-condition input water so as to reduce mineral scaling on their distilling equipment. Some of this salt may be getting through along with volatile gas born contaminants, etc. The salt may be interacting with the colloid process.
Now what I do is buy distilled water and distill it again myself. The final product is water with a conductivity of around .5 uS, which is well under 1ppm. And I have to say it makes a big difference even just subjectively in the quality of the CS. No cloudy colour, no residue or sediment, no Tyndall. The only way I can actually tell that I've made CS is by measuring the sol afterwards with the PWT. It's usually around 20 - 25 uS. This may all be overkill for certain low dose and topical applications of CS. But for ongoing and therapeutic dose levels and maximum cellular level effectiveness, it seems that knowing water purity can help. I now that previous posts from Brooks and other lab-oriented listers bears this out. cheers then, Steve King -- The silver-list is a moderated forum for discussion of colloidal silver. To join or quit silver-list or silver-digest send an e-mail message to: [email protected] -or- [email protected] with the word subscribe or unsubscribe in the SUBJECT line. To post, address your message to: [email protected] List maintainer: Mike Devour <[email protected]>

