Erythrosine "Y" brand 1 part.
Prepare second bath as follows:
Erythrosine stock solution 25 c.c.
Distilled water 175 c.c.
Strong water ammonia 4 c.c.
After removing the plate, dip it again face down to rinse off any
particles of scum, etc., that may get in the bath accidentally. This
bath may be used for one dozen 8 by 10, when it should be thrown away
and fresh bath used.
After the plates come out of the last bath, they should be stood on
clean blotting paper to absorb the excess of solution. I would also
advise to use clean fingers. Pyro. or hypo. on the fingers is a
drawback to success.
After plates have been drained, place them in a cleaned rack in an
absolutely light-tight closet, with air holes so constructed as to
admit air but no light; the plates will dry in from eight to twelve
hours. They are best prepared in the evening, and, if the closet is
good, will be dry in the morning.
After the plates are dry they may be packed face to face with nothing
between them, in a double-cover paper box, and put in a dark closet
free from sulphureted hydrogen gas, until ready for use. I have kept
plates for three months in this way, and they were in good condition.
Great care should be used in developing these plates, as they are
sensitive to the red; get used to developing in a dark part of the
dark room; occasionally you may look at the process of development in
a little stronger light.
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