Sciencemadness Discussion Board

OTC Indicators for EDTA titrations?

blogfast25 - 24-5-2010 at 11:58

Does anyone have ideas for an EDTA indicator from OTC materials? In my UNI days it was all about Eriochrome Black T but I'm gonna find that kind of hard to find...

per.y.ohlin - 25-5-2010 at 03:28

It's fairly easy to find actually. http://www.makershed.com/ProductDetails.asp?ProductCode=ZUNC...

blogfast25 - 25-5-2010 at 04:26

Interesting site, per, but ships to contiguous US only, not internationally...

hissingnoise - 25-5-2010 at 05:11

Actually blogfast25, if you recheck you'll find they do ship internationally. . .
The contiguous states thing is about fast shipping.

Ozone - 25-5-2010 at 06:12

I prefer calmagite. It should be available without too much fuss.

Calmagite.jpg - 23kB

blogfast25 - 25-5-2010 at 12:24

Quote: Originally posted by hissingnoise  
Actually blogfast25, if you recheck you'll find they do ship internationally. . .
The contiguous states thing is about fast shipping.



Yes, I can see that now. My bad... :(
Quote: Originally posted by Ozone  
I prefer calmagite. It should be available without too much fuss.


In what way is calmagite to be preferred?

Ozone - 26-5-2010 at 07:30

The attached paper explains my preference (and is a nice paper, too-boot).

Cheers,

O3

Attachment: Ingman and Ringbom 1966_calmagite.pdf (391kB)
This file has been downloaded 2718 times

blogfast25 - 27-5-2010 at 12:30

Thanks O3, that's a good read!