FOR REDDER TONES add more of the Sepia Solution.
After the Sepia Solution has been added to the developer, allow the mixture to boil for a few moments.
When cold, the bath is ready for use.
Allow the prints to remain in the bath until full strength and brilliance • has been attained.
It is obvious that an under-exposed print will not develop full strength and that an over-exposed one will develop too dark.
Retain the developing solution for future use, allowing the solution to settle, and making use of the clear portion only. When the greater portion of the old developer has been used, prepare a fresh solution in the usual manner and add to the old one.
It is not necessary to filter the bath, so long as only the clear portion is used.
When the print is fully developed, immerse face down in the clearing bath prepared as follows : Water, ozs.
Aluriatic Acid, c. p., - - 2 drams.
The prints must go through two clearing baths, prepared as above, remaining for at least five minutes in each bath.
Separate prints each time they are changed.
Be careful not to carry any of the acid bath on your fingers into the developing bath.
After the prints have been fully cleared, wash for one-half hour in run ning water, or in six changes of water, separating them one by one in each change.
Prints may be suspended by one corner to dry, or they may be placed between blotters to remove the greater part of the moisture, and then replaced between clean dry blotters to dry under light pressure.
Avoid the use of the ordinary and colored blotters, use only those specially made for photographic use.
The following are the most important points in connection with the manipulation of Platinum paper and should receive careful attention.
Keep paper dry at all times before development.
When placing paper on negatives or examining prints, do not expose to strong light; weak daylight or gaslight will answer.
Keep up strength of developer, and do not use it too cold.
Slide prints under developer, face up, to prevent the formation of air bells.
Place prints directly from the developer into the acid clearing bath without previous washing.
See that clearing of prints is thorough. The last clearing bath should be free from any yellowness.
Use chemically pure muriatic acid for clearing bath.
If developer crystalizes on surface of prints, causing numerous fine, dark spots to appear during development, reduce the strength of solution by adding from one to two ounces of water to twelve ounces of developer.