###  That's sort of what I expected, though not to this degree.
 let's see if i have this straight
 Ionic silver is a single atom minus an electron, so it has a + charge
[conducts in water]
An ionic cluster is a crystal? of various sizes, with a + charge [coducts
in water]
Metallic silver has no charge? and can be of any size [does not conduct in
water]
 "Colloidal silver" can be both ionic [conductive/charged] and metallic
[nonconductive/not charged] as long as the particle size meets some max spec?

 Note: I have never had any noticable settling in a normal/average batch.
 I have had batches turn a little bit yellow but only if left open to the
air in a wide mouth container over night.
 KD'C

At 10:34 PM 4/14/00 -0400, you wrote:
>The PPM meters are usually calibrated for CaCO2 at 2uS/PPM. For
>ionic Cs Ivan says 0.6, Trem 1 (or lately maybe 1.6) and I and some
>others say 1.6uS/PPM.
>
>With the high ratio you are getting I would suspect your sample had
>a lot of metallic silver in it (not  ionic) from running for an excessive
>time without circulating, allowing crystallization. The PPM and PWT
>meters will not register any metallic silver, as they do not conduct in
>a suspension. The true meaning of PPM is by weight so the lab may
>certainly be correct, while you measured only part of the mix. Drop
>a dime in a glass of DW and you get high PPM but no conductivity!
>
>We do free testing and report the uS and test for metallic silver also!
>
>Fred
>http://www.health2us.com/water.htm
>...........................................................................
.........................................
>  ## Ohh Robert, that's a sore one.  My DiST 1  PPM meter doesn't agree with
>the lab reports at all.  It's supposed to read straight PPM.  I get 14 at
>second shutoff... about 2 to 2 1/2 hrs run time.   The lab says 45.5 PPM
>silver by weight in 2 hrs.
>  KD'C
>
>
>--
>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]
>Silver-list archive: http://escribe.com/health/thesilverlist/index.html
>List maintainer: Mike Devour <[email protected]>
>
>
>
Make your own pure clear Colloidal Silver with a current controlled, "auto
off" generator, for pennies a gallon.

 http://www.silverpuppy.com