Ivan wrote:

> What colour are particles less than 10 nm?

The same as in the photo, cloudy, white.

> Have you sized a red or yellow sol?

Have not measured a red, briefly looked at a yellow. I have seen slight yellow 
with particles over 60-90 nm which is a small fraction of the blue wavelength.

frank key


--
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: 
silver-list-requ...@eskimo.com  -or-  silver-digest-requ...@eskimo.com
with the word subscribe or unsubscribe in the SUBJECT line.

To post, address your message to: silver-list@eskimo.com
Silver-list archive: http://escribe.com/health/thesilverlist/index.html
List maintainer: Mike Devour <mdev...@eskimo.com>