[pure-silver] Re: Combination Toner Test
- From: john stockdale <j.sto@xxxxxxxxxxx>
- To: pure-silver@xxxxxxxxxxxxx
- Date: Sun, 31 Jul 2005 09:17:10 +1000
At 08:21 PM 30/07/2005, Richard wrote:
..........Viradon does not list Sodium
Carbonate as does KBT, this is on the label and MSDS but who knows what
is actually in it..........
Even the Australian MSDS which often contain extra details lists only
sodium polysulfide. But it does say that the pH of the concentrate
is 11.4, and that of the diluted working solution is in the range 11-12.
http://www.darkroomshop.com.au/
The MSDS on
www.freestylephoto.biz
shows the pH of Viradon stock to be 14.
One of them would seem to be wrong. But unless polysulphide is quite alkaline, there could well be some carbonate in there.
=============================================================================================================
To unsubscribe from this list, go to www.freelists.org and logon to your account (the same e-mail address and password you set-up when you subscribed,) and unsubscribe from there.
Other related posts:
