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.
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? __________
When performing the pH test, you basically:
a. Collect a sample and allow a precipitate to fall out. The amount of precipitate
b. Add an indicator to a sample and compare it with color standards.
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.
You will use the DPD Test primarily to test for __________________________.
The test can also be used to determine ___________________________ and
A lake in a foreign country is being considered as a swimming area for Army
a. What are the three major disease hazards?
b. What must be done to ensure that the site is not a health hazard?