42.
Before performing bacteriological studies, the sample bottles should be sterilized
and treated with ________________________________. Samples should be
collected when the pool is____________________ and during ______________.
The preferred sampling point is near _______________________. The samples
should be _____________________immediately upon collection and tested within
____________hours of collection.
43.
A swimming pool has had 25 water samples taken for bacterial analysis during the
past 30 days; 6 of the samples had a coliform count over 1.0 per 50 ml. Does this
pool meet the standards for bacteria count? __________
44.
When performing the pH test, you basically:
a. Collect a sample and allow a precipitate to fall out. The amount of precipitate
indicates pH.
b. Add an indicator to a sample and compare it with color standards.
c.
Collect a sample and add a standard chemical to allow the sample to separate
into two layers. The color of the bottom layer indicates the pH.
45.
You will use the DPD Test primarily to test for __________________________.
The test can also be used to determine ___________________________ and
_______________________________________.
46.
A lake in a foreign country is being considered as a swimming area for Army
personnel.
a. What are the three major disease hazards?
_______________________________________________________________
_______________________________________________________________
_______________________________________________________________
b. What must be done to ensure that the site is not a health hazard?
_______________________________________________________________
_______________________________________________________________
MD0166
1-49