Page 89 - The Wellington photographic handbook

To prevent fog it is necessary to add 1 drop of a 10% solution
of potassium bromide to each ounce of developer. The image will
be of a black tone with a slight tendency to warmth, and softer
in gradation than that given by the amidol and metol-hydrokinone
formulae previously mentioned.
By increasing the potassium bromide to 10 drops of a 10%
solution per ounce, decidedly warm tones can be obtained. Develop-
ment will take from three to four minutes.

Fixing.
In the following fixing bath S.C.P. is completely fixed in
five minutes.
Hypo ... ... ... ... 4 ounces 100 grammes
Water to 20 „ 500 c.c.
If an acid fixing bath is preferred, the following may be employed
:
Hypo ... ... 4 ounces 100 grammes
Potassium Metabisulphite ... 200 grains 13
Water to 20 ounces 500 c.c.
If a combined hardening and fixing bath is preferred the
formula given on page 50 will be found suitable.
The prints should be submerged in the hypo during the whole
period of fixation, and not allowed to float on the top, otherwise
stains may result. Nor must it be expected that they will fix
properly if allowed to lie together in a mass. They must either lie
separately, or be kept moving.

WASHING, DRYING AND MOUNTING S.C.P.
On taking the prints from the hypo bath, they must be
thorough washed. There is no need to repeat here what has already
been said with reference to the washing of bromide prints, as
it applies with equal force to S.C.P. The reader is therefore referred
to page 51, where he will find full directions for washing the prints
satisfactorily. In the same place also are directions for trimming,
drying and mounting Bromide prints, which apply equally to
S.C.P. If desired prints on S.C.P. may be toned in any of the baths
described on pages 55 to 59.
69