Re: How to handle small amount of salt.
- From: Uncle Al <UncleAl0@xxxxxxxxxxxxx>
- Date: Wed, 06 Jul 2005 14:22:24 -0700
Hans wrote:
>
> Hello,
>
> A question of new-bee. Recently I usually deal with weighing of a certain
> amount of salt, usually only one or two mg, with an analytical balance.
> Since the salt absorbs water very strongly, it is really hard to do accurate
> weighing, and the original salt as powder all sticks together during the
> weighing process. All the things that I can do is trying to weigh it
> quickly. Is there any other trick of accurate weighing (I mean, for a given
> amount) small amount of very bibulous salt?
1) Serial dilution, then pipette out the solution.
2) Put the balance in a glovebag and purge with dry nitrogen or
argon. Glovebox.
--
Uncle Al
http://www.mazepath.com/uncleal/
(Toxic URL! Unsafe for children and most mammals)
http://www.mazepath.com/uncleal/qz.pdf
.
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