We use Optical Character Recognition (OCR) during our scanning and processing workflow to make the content of each page searchable. You can view the automatically generated text below as well as copy and paste individual pieces of text to quote in your own work.
Text recognition is never 100% accurate. Many parts of the scanned page may not be reflected in the OCR text output, including: images, page layout, certain fonts or handwriting.
1949 COLOR PROCESSING CONTROL 15
TABLE III
HARDENER REPLENISHMENT (These statements apply to the solution used after either first or color developer)
No. 901 Hardener No. 901 Replenisher
Potassium Chrome Alum 30 grams 30 grams
Water to make 1 liter 1 liter
Basic replenishment rate — 30 cc./ft. 35-mm film
This solution is replenished with the same solution as the original at a rate necessary to keep the tank pH approximately 3.5 to 4.0. If the pH rises above 4.5 (although the hardening effect will increase up to a pH of about 5.0) chrome alum sludge and scum may also result. If the pH. falls below 3.5, reduced hardening is obtained. Since a solution of chrome alum will hydrolyze on standing, the subsequent release of acid causes a natural drop of pH. The carry-over of a small quantity of alkali is not undesirable because it aids in maintaining the optimum pH.
TABLE IV COLOR DEVELOPER REPLENISHMENT
A-605 Color Developer
A-605 R-2 Color Developer Replenisher
Calgon 1 . 0 gram Sodium Bisulfite 2.0
1 . 0 gram 2.3
S-3 4.0
5.6
Sodium Carbonate 67 . 5
80.0
Potassium Bromide 1 . 0
0.6
Water to make 1 liter
lliter
Basic replenishment rate — 23 cc./ft.
35-mm film
Use of this replenisher, like the first developer replenisher, is designed to maintain the original concentration of developer ingredients. Regular bromide analysis will assist in maintaining the proper replenishment rate. No iodide is added to this bath. Analysis indicates some iodide is accumulated during use but the formula is relatively insensitive to this restrainer in the quantities involved.