FotoDave@aol.com
Thu, 14 Jan 1999 23:33:38 -0500 (EST)
In a message dated 1/14/99 9:35:02 AM Pacific Standard Time,
wallen@boulder.nist.gov writes:
> Is this
> kind of a muddy film? I've seen this happen in my dichromate solutions,
> and mine aren't mixed to saturation. It sounds like there was something
> in the water that is reacting with the dichromate.
Kind of hard to describe. It is brown and yes, I guess it's muddy, and it
sticks to the bottom of the bottle, that is, even when you shake the bottle,
it remains there.
> I'm assuming that your solution is used as a stock for
> mixing gum emulsions, and that it never comes into contact with organic
> matter?
That's right.
> It was mixed up
> shortly after the first issue of the Post Factory Journal arrived, and I
> don't think that there is any precipitate in this bottle - yet anyway.
> I'll have to check.
>
Hmmm.... does the fact that I store it in a plastic bottle instead of glass
bottle matter? It is stored in a plastic bottle that was for photo chemical.
Dave
This archive was generated by hypermail 2.0b3 on Sat Nov 06 1999 - 10:06:42