NOTE:
EACH CHEMICAL MUST BE COMPLETELY DISSOLVED BEFORE ADDING
THE NEXT CHEMICAL TO THE SOLUTION.
d. After all of the chemicals have been mixed thoroughly, add cold water to bring the solution
level up to the required level, then store the solution in airtight containers and allow them to cool before
use.
e. Finally, label the containers with the name of the solution, the date prepared, and the name
of the person mixing the solution.
(35) The next sequence of frames per-
tains to Mr X, who is going to mix
a photographic solution from bulk
chemicals. Mr X has a chemical
formula which tells him the chemi-
cals he needs, how much to weigh,
the proper mixing order, the re-
quired amount of water, water
temperature and other instructions.
(NO RESPONSE REQUIRED)
(36) First, Mr X must weigh out the de-
sired amounts of chemicals called
for in the formula.
The first step Mr X must perform
is to _______________ _______________
the chemicals.
weigh out
(37) Secondly, Mr X must fill the
mixing container with hot water
(always less than the amount of
solution desired, usually 90 to
125 F).
After weighing the chemicals, Mr X
must fill the mixing container
with hot _________.
water
(38) The third step is to dissolve the
weighed chemicals in the hot water.
Pour the chemicals slowly into the
water.
15
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