[alt-photo] Re: Developer test

[Peter Friedrichsen]

You could try adding a calcium salt (chloride) to the KOx as it will 
precipitate out calcium oxalate. Sodium citrate won't do this at RT.

At 03:59 AM 08/09/2012, you wrote:
>Does anyone know of a simple test to determine which of my 
>developers is which?
>I have three in bottles and the labels have become completely 
>unreadable. One is KOx, one is the room temp version of KOx and the 
>last is Sodium Citrate. All are quite dark from use.
>
>Jon
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