Z4B051 VOL 3 EC3 Practice Test
Listed below are sample questions for Z4B051 VOL 3 EC3 from our database. Register now to start taking tests for this AFSC! We have 102 questions currently in the database for this category.
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The version of this CDC we have in the database is Z4B051 VOL 3 EC3
1 . (446) The 95th percentile exposure estimates
a value above which about 5 percent of exposures occur
2 . 95. (447) Why would you develop a histogram when analyzing environmental health data?
Develop a time series plot. velop a scatter plot
3 . (428) What item must be field checked but cannot be calibrated?
Hand-held sampling pump
4 . (416) You perform heterotrophic plate counts for swimming pools to
measure changes in the swimming pool treatment process
5 . (412) When sterilizing a water tap, what is the percentage of chlorine solution you should use and how long should the tap be immersed in the solution?
1 percent chlorine solution; 0.5 minutes
6 . (407) What is the definition of quality control?
the steps to be taken to determine validity of sampling and analytical procedures
7 . (428) When calibrating a Photo Ionization Detector/Flame Ionization Detector (PID/FID), how many Tedlar sample bags need to be filled?
8 . (428) Why is a single “blank” run sufficient as an operational check for the HAPSITE?
The HAPSITE contains internal gas standards
9 . (403) A 15-minute time weighted average (TWA) short-term exposure limit is known as a
Short-term Exposure Limit (STEL)
10 . (412) When collecting potable water samples for bacteriological analysis, you should adhere to all of the following guidelines except which one?
Always flush out the bottle before taking the sample.
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