From: John Glen (microcrystals2002@yahoo.com)
Date: 10/29/02-11:49:31 PM Z
Wait a minute! The fun is not over yet!
I have been worried myself about hypo... whenever I
record my own notes, I shorten sodium thiosulfate to
"hypo" based on, on, on... well you know- thats what
we call it!
However,
Of course you know that hypo is actually short for
sodium hyposulflate which is what we used to call
sodium thiosulfate untill we realised our mistake.
But the word sticks with us much like the word
"emulsion" which our photograhic emulsions are not-
but we continue to use it. Wrongly? Well here is the
icing on the cake:
What we were once wrongly calling sodium hyposulfate
we shortened to HYPO, which is now short for what we
also wrongly call sodium thiosulfate.
It should be called sodium thiosulfate pentahydrate,
unless of course you are using the anhydrous stuff-
which I doubt.
Don't feel too bad,
Join the crowd!
Actually the problem is even more complicated than
this.
Isn't life interesting!
JG
--- Christopher Lovenguth <zantzant@hotmail.com>
wrote:
> This is sort of a joke on me posted to you all but a
> lesson learned and I
> thought I'd share.
>
> Does anyone know the difference between sodium
> thiosulphate and sodium
> sulphite? How about whether your daguerreotype
> plates gild or not when used
> with gold chloride. I have been attempting to gild
> my plates over the last
> four months with a concoction of gold chloride and
> sodium sulphite. Funny
> thing is over and over I read and reread the recipe
> and asked people about
> gilding. And over and over I have been seeing the
> word "Thiosulphate" and
> making it out to be "Sulphite". It finally dawned on
> me yesterday at work
> when someone email me and was talking about the
> concentration of hypo for
> gilding. The instant I saw that I realized that all
> this time I had
> convinced myself that I was suppose to be using
> sodium sulphite even while
> reading and telling people thiosulphate.
>
> Like I said to someone else, I'm glad I'm not a
> chemist or pharmacist
> because I would have killed myself and/or someone
> else by now. Thankfully
> the chemicals I use are not too dangerous. This has
> to be the stupidest
> thing I have ever done!
>
> Needless to say I have now gilded my plates with the
> right formula and can't
> believe how nice and permanent (I can touch the
> plates now and the image
> doesn't instantly rub off) my images are.
>
> Thought I would humble myself here on this list and
> tell you all this. Plus
> I know someone out there will get a kick out of it!
> WOW... this goes in the
> "idiotic things I've done" vault of mine! -Chris
>
>
>
>
>
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