US Army photography course - Photographic Quality Control SS0513.pdf

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SUBCOURSE
SS0513
EDITION
9
PHOTOGRAPHIC QUALITY CONTROL
SIGNAL SUBCOURSE 513
PHOTOGRAPHIC QUALITY CONTROL
EDITION 9
3 CREDIT HOURS
REVIEWED: 1988
INTRODUCTION:
This subcourse is designed to teach you how to mix and store chemicals used in the pH meter
and hydrometer, and you will learn about sensitometry and photo process control. No amount of
emphasis could be enough to stress the importance of this information. Quality control is the most
important single element in the operation of a photo lab. Using good quality control procedures can
save you valuable time and money.
LEARNING STRATEGY:
This subcourse consists of four lessons and an examination.
Lesson 1. Chemical Mixing and Storage.
Lesson 2. Determining pH and Specific Gravity.
Lesson 3. Sensitometry and Photographic Process Control.
Lesson 4. Operate Sensitometer, Densitometer, and Plotting Control Chart.
Examination.
The following tasks are covered in this subcourse.
113-578-3004, Process B&W/Color Neg/Color Slide Film Manually.
113-578-3013, Mix Photographic Solutions.
113-578-3014, Evaluate B/W Photographic Negatives.
113-578-6004, Initiate Safety Program.
RESOURCE REQUIREMENTS:
Subcourse booklet and examination answer sheet are furnished. No other material is needed.
CREDIT HOURS ------------------------------------------------------------------------
hrs.
1
GENERAL INFORMATION:
The subcourse consists of learning material and exercises for each lesson. Read the material and
answer all the exercises as they appear in the lesson. Lesson 1 contains subject matter information
followed, by programmed instruction for each of the objectives, followed by exercises.
Lessons 2, 3 and 4 contain subject matter information followed by exercises.
Solutions to the exercises are located at the end of this subcourse. Upon completion of this
subcourse, you must answer all of the questions in the examination and return it for grading.
We wish you good luck.
POC: DENNIS FOSTER
TRAINING DEVELOPER
AUTOVON: 926-2522
COMM: (303) 370-2522
*** IMPORTANT NOTICE ***
THE PASSING SCORE FOR ALL ACCP MATERIAL IS NOW 70%.
PLEASE DISREGARD ALL REFERENCES TO THE 75% REQUIREMENT.
2
LESSON 1
CHEMICAL MIXING AND STORAGE
OBJECTIVE:
In this lesson you will gain a knowledge of chemical mixing and storage. Chemistry is essential
for all photography. The photographer must depend on the chemical processes to produce the negatives
and prints which are his/her ultimate goal. In some instances, in Army photography, compounded
chemicals known as prepared chemicals, or ready mixes, are not available because of economic or other
reasons. In any event, it may be up to you to mix your own processing solutions, and unless they are
safely, carefully, and properly handled and mixed, the results may be inferior or even DISASTROUS.
The learning objectives of this lesson are as follows:
1.
2.
3.
4.
5.
6.
7.
8.
STATE why chemicals should be stored in airtight containers.
STATE why a chemical formula would require more monohydrated chemicals then
desiccated chemicals.
LIST four ways to purify water.
STATE why equipment and containers made of iron, tin, or zinc should not be used for
mixing or storing chemical solutions.
STATE why solutions should not be mixed with the shaft of the electric mixer in the
center of the container.
REARRANGE in their proper sequence, a given list of steps that are required when
mixing a photographic solution from bulk chemicals.
STATE how all chemicals should be regarded and handled.
STATE the recommended publication to reference for obtaining information about
photographic chemicals, solutions, and formulas.
3
9.
10.
11.
MATCH a list of containers and chemicals with the proper method of storage for each.
STATE three ways photo lab personnel could become poisoned when working with
photographic chemicals.
MATCH the chemical classification with the potential hazard of each class.
hrs
CREDIT HOURS...........................................................................................
MATERIAL REQUIRED..............................................................................None
SECTION I
1-1.
WHY CHEMICALS SHOULD BE STORED IN AIRTIGHT CONTAINERS.
a. If chemicals are exposed to air for any great length of time, they will deteriorate and be of no
further use. To prevent this, they should be kept in airtight containers.
b. There are three ways chemicals deteriorate. Either they give off moisture to the air, termed
efflorescence, or they absorb moisture from the air, called hydroscopic or deliquescence, or they combine
with oxygen, known as oxidation. The following six frames of programmed text, will help to explain the
storage of chemicals.
(1) If chemicals are exposed to air for
any great length of time, they will
deteriorate and be of no further
use.
Chemicals should not be ___________
to air for any great length of
time.
exposed
(2) Chemicals should be stored in
airtight storage containers to pre-
vent their deterioration. Chemicals
exposed to air will _______________.
(3) (Chemicals may deteriorate for one
of the following reasons:
deteriorate
4

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