Re: Eau de Javel if you are interested.
Hi Chris and ALL, Nice with a dash of lemon on a sunny summer day. I wonder if anyone on this list has ever used this refreshing cocktail ? ? Spelt with two ''L 's'', of course. Chin, chin. Down the hatch ! Seasonal greetings. John. Photographist - London - UK E.J.Wall's Dictionary of Photography , eighteen ninety seven gives :- ''Eau de Javelle is used for eliminating the last traces of hypo from the film, and also for reducing over-dense negatives, its action being due to hypochlorous acid. It is a solution containing an alkaline hypochlorite, and can be made as follows :-----'' Chloride of lime ............................. 2 ozs. Carbonate of potash ............................. 4 ozs Water ......................................................40 ozs. Agitate the chloride of lime with 30 ozs. water, dissolve the potash in the remainder, mix and filter. ............................................................................................ ----- Original Message ----- From: "Christina Z. Anderson" <zphoto@montana.net> To: "Alt, List" <alt-photo-process-L@usask.ca> Sent: Monday, November 26, 2007 3:26 AM Subject: Eau de Javel if you are interested. For what it is worth--eau de Javel (one "l" is the correct spelling so the article says) is said to be 4 g. sodium carbonate and 3 g. sodium hypochlorite mixed each separately with a bit of water and then combined in a total water amount of 500ml. This was used to develop "direct carbon" prints or paper such as Fresson, Arvel, Artigue, also a couple "direct carbon" papers from Germany (Hochheimer-Gummidruckpapier and Buhler's direct carbon paper). These are prints made with gelatin, not gum. This is with a 6 min sun exposure in summer, a 2-3% pot bi sensitizer. Eau was put in a tray and print face down in it.This comes from a 1943 article in the BJP. I am going back through about 200 sources I have on gum and this doesn't apply to me per se but thought someone might have use for it before I toss it.
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