John Grocott wrote
''This bleach method has worked very
well for me for many years, probably because gum is not used in my
Direct Carbon process. At the dilution of 25ml to 1 Litre water (1/40 th) there
is practically no odour. Not even as much as when its used in the washing of
clothes and drains etc., in the houshold.''
The label on my concentrated bleach
bottle states ''Contains less than 5 % chlorine based bleaching
Loris, you say here you have 55 % bleach. Is it houshold stuff you buy in
the supermarket ? Or something mixed up in your lab ? I have never
seen such a high strength bleach, anywhere ! !
Please could you check ?
Ciao. John - Photographist - London - UK
----- Original Message -----
Sent: Saturday, December 01, 2007 6:11 PM
Subject: Re: Bleach-development with gum
> Quoting Katharine Thayer <email@example.com
>> It's interesting to me that
>> such a
strong bleach you're using doesn't just take the image right off
> Well, since I dilute it by mixing 20ml
into 1000ml of water, the
> actual strength is something like 1%. I
can barely sense the odor of
> hypochlorite when it is so much
diluted (it would cause me to
> vomit/faint otherwise).