that may splash the solution on someone nearby. Acids
edge of the container) while rapidly but carefully stirring
labeled clearly with waterproof tape or nameplates to
reduce the chance of putting a solution into the wrong
tank. The label should contain the name of the solution,
the date it was mixed, and the name of the person that
mixed it. It is also mandatory that hazardous chemical
labels be attached to all chemical containers.
solution contamination. The mixing tools and tanks
must be thoroughly cleaned right after use to prevent
dried solutions from forming encrustations that could
dissolve when a new solution is mixed. Mixing tools that
have not been used in some time should be washed
before use to remove any dust or dirt that may have
amount of water-usually about one half to three fourths
be as specified in the instructions. Developers are
generally mixed at or about 90°F to 125°F, while fixers
are mixed in water that should not be much above 80°F.
completely dissolved before the next ingredient is
added. All liquids must be completely diluted, while
stirring, before the next ingredient is added.
be added to bring the solution up to the correct volume.
Do not forget to mix this water thoroughly into the
research goes into the production of chemical products;
however, it is only effective when the chemical is mixed
familiar product should be reviewed, because there are
continual attempts to improve photographic materials;
for example, new film or developer combinations may
call for changes in dilution, processing time, or
temperature to get the required results. Learn to follow
directions. This is very important in the preparation of
chemicals for both quality and safety reasons.
inhale any chemical. You are required to wear rubber
gloves, a rubber apron, eye protection, a long sleeve
shirt, and a respirator for your personal protection.
Remember, for safe mixing and quality results,
aid in filling a chemical mixing tank and to
prevent splashing in the sink. Aboard ship,
hoses attached to potable water spigots can back
siphon chemicals from the tank or sink into the
drinking water supply. Such hoses should either
be removed after each use or have a backflow
preventor installed in the plumbing system.
can easily be prepared by the following method:
Basic Photography Course