[pure-silver] Re: baking soda as wash aid

At 06:58 AM  18/02/2005, Ryuji wrote:
...........
>Levenson demonstrated the importance of bicarbonate in wash
>water. Pure water was a much poorer washing water than the water
>containing some bicarbonate.

I am planning to do some printing in a remote part of Australia where I 
will have some access to a rainwater tank, but will have to use far less 
for Fibre print washing than I'm used to.   I was planning to use a series 
of trays, with one print per tray and transfer the water from tray to tray 
such that the least-rinsed print would first be washed in the most-used 
water and so forth.

I was planning to use a sulphite/bisulphite washing aid (Richard K 
recommendation) prior to the many water rinses.

Sodium bicarbonate is quite cheap.  Would you advise using a little in each 
lot of water?   And if so, how much.  And would you advise using none in 
the last one (or several) rinses?

John S


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