This section is from the book "Complete Self-Instructing Library Of Practical Photography", by J. B. Schriever. Also available from Amazon: Complete Self-Instructing Library Of Practical Photography.
Keep Prints Immersed. Prints should always be fixed face downward, must be thoroughly immersed, and not allowed to float on top of the hypo, as discoloration may occur. By being careful about this you will be insured of complete fixation.
Temperature. The temperature of all solutions should be from 60° to 65° Fahr.
Mixing Solutions. During cold weather use warm water for making up the solutions so as to have them at the proper temperature.
Size Of Trays. Remember that all dishes should be a trifle larger than the prints.
Quantity Of Developer To Use. Do not try to be economical with the developer, but use sufficient to thoroughly cover the print. In this way you will avoid markings and stains.
Hypo In Developer. Remember that a trace of hypo in the developing dish will surely cause stains.
Clean Fixing Bath. In order to produce clean prints it is necessary to have a clean fixing bath.
Cutting Paper. If you desire to cut the paper you must do so with a pair of shears, or a sharp knife, and never fold or tear it, as this leads to markings.
Care Of Unused Paper. After removing the sheet of paper from the package, always replace the remainder before doing anything else. Unless you do this, sooner or later you will fog some of the paper.
Obtaining Vigorous Prints. Vigorous images with good, rich blacks are produced by giving short but sufficient exposure and developing with strong but slightly restrained developer.
Quick Development. Prolonged development will cause yellow prints. The exposure should be correct so as to allow of quick development.
Thorough Washing. Washing in running water is not so thorough as changing the prints from one tray to another, allowing them to soak at least ten minutes in each change of water; a half dozen changes will then be sufficient. 797. Removing Stains from Prints. - Developer and other stains can be removed by gently rubbing the surface of the print with
Nitric Acid-C. P............................
Methylated spirits ( Wood Alcohol) .................
Always plunge the prints under water after each rubbing.