[alt-photo] Re: Zia standard solutions

[Terry King]

Loris


You do not specify how concentrated the solution is.


I'd have made sure that I had bought the right chemicals.


 Given that you overcomplicate things and that  when you do you accuse your students of being unwilling to learn,  there does not seem to much point in continuing the discussion.


Terry








-----Original Message-----
From: Paul Viapiano <viapiano at pacbell.net>
To: The alternative photographic processes mailing list <alt-photo-process-list at lists.altphotolist.org>
Sent: Wed, 21 Jul 2010 19:44
Subject: [alt-photo] Re: Zia standard solutions


I'll tell you what I'd do. Post on this list for help... 
 
 
----- Original Message ----- From: "Loris Medici" <mail at loris.medici.name> 
To: "The alternative photographic processes mailing list" <alt-photo-process-list at lists.altphotolist.org> 
Sent: Wednesday, July 21, 2010 11:33 AM 
Subject: [alt-photo] Re: Zia standard solutions 
 
>  Terry you start to look funny from here... I'll play your game anyway! 
> 
> How about this scenarios: 
> 
> 1. You need to prepare a 10% sulfuric acid solution from concentrated > sulfuric acid. What to do? 
> 
> 2. You're asked to prepare trisodium citrate solution with an "exact" > strenght of 20%. (That's what the manual / instructor and/or process needs > calls for...) All you can have from the chemistry store is the dihydrate > or the pentahydrate variants. What to do? 
> 
> Regards, 
> Loris. 
> _______________________________________________ 
> Alt-photo-process-list | http://altphotolist.org/listinfo  
_______________________________________________ 
Alt-photo-process-list | http://altphotolist.org/listinfo