The preferred method for sterilizing the funnel and filter--support assembly is in an
________________ when using the bacteriological water testing kit.
Membrane filters and absorbent pads must be autoclaved for ____ minutes
What is the recommended basic filtering volume (BFV) of an average coliform
density if the previous tests on a given water source of same shows an average
coliform density of 67 colonies per 100 ml? ____________ ml.
If three sample volumes (as noted in 13 above) are to be filtered, what should they
be? _____, _____, and _____ ml.
After filtering, the filter and absorbent pad are incubated for __________ hours
If a petri dish contains 36 typical coliform colonies, and the volume of sample
filtered was 60 ml, what is the coliform count? ______ per 100 ml.
Which of the following test(s) is (are) used to specifically identify the source of
b. Fecal coliform.
d. Fecal streptococci.
How many water samples are required per month from a water supply system
serving a military installation with a population of 6,000 persons? __________