Volume 3: Unit 2 Flashcards
Developing your flight’s environmental sampling, analysis, and monitoring plan is based on the _____
Regulatory requirements for your drinking water system
Include field blanks along with the liquid samples you send to the laboratory because they ____
Check for cross-contamination while handling samples
If you need to determine the residual chlorine content in a drinking water sampling, which piece of equipment would you use?
Color comparator
Your bioenvironmental engineering (BE) has informed you that you need to collect a water sample that characterizes the water quality at the dining hall at 0900. Which type of sample do you need to collect?
Grab
What type of sampler is best suited to collecting a water sample at various levels from tanks, tank cars and drums?
Bacon bomb
Fluid transfer is best accomplished using a ______
Plastic, polyethylene pasteur pipet
You have just received a new water test kit that you have never used before. What should you do before using the kit the first time?
Read manufacturer’s operating instructions
Which statement best describes how the calibration process works?
a) Compares equipment response against instruction manual guidelines.
b) Compares equipment response against an accurate reference source.
c) Compares readings against accurate reference readings.
d) Compares unknown values against know values
b) Compares equipment response against an accurate reference source
When collecting drinking water samples, in what order should you collect them?
Metals, chemicals, microbiological
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
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
If you ship your bacteriological water samples to an approved laboratory, what is the maximum time between collection and examination?
24 hours
What is the first step you perform when taking a water sample for chlorine analysis?
Remove the faucet aerator
How is total combined chlorine (TCC) determined?
Subtracting the FAC results from the TRC results
What type of water/liquid do you use to calibrate the pH pen?
Buffer solution
