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pH
Alkalinity and Hardness
Lab Equipment
Fluoride
Potpourri
100
The ability of water to neutralize a strong acid.
What is alkalinity?
100
A laboratory device that uses pressurized steam to sterilize microbial media and laboratory equipment.
What is an autoclave?
100
The primary MCL for fluoride.
What is 4 mg/L?
100
The chemical added to bacteriological sampling bottles that neutralizes chlorine.
What is sodium thiosulfate?
200
The minimum number of buffers required to calibrate a pH meter.
What is 2?
200
The three ions that contribute to alkalinity.
What are carbonate, bicarbonate, and hydroxide?
200
The operating temperature and pressure for an autoclave.
What is 121 c at 15 psi?
200
The secondary MCL for fluoride.
What is 2 mg/L?
200
The two operational control tests that monitor the disinfection process.
What are chlorine residual and bacteriological samples?
300
The pH scale runs from __ to __.
What is 0-14?
300
Hard water scale is caused by which of the following (calcium bicarbonate, calcium carbonate, or magnesium carbonate)
What is calcium carbonate?
300
The type of eye protection that should be worn while handling acids.
What are goggles?
300
The two approved methods for measuring fluoride in drinking water.
What are SPADNS and the probe?
300
Of the following organisms which is the largest and which is the smallest:( bacteria, viruses, Giardia cysts)
What is viruses are smallest followed by bacteria and Giardia cysts are largest?
400
The capability of a water or chemical solution to resist a change in pH?
What is alkalinity or buffering capacity?
400
Of the following chemicals, which would contribute to alkalinity in water (calcium carbonate, calcium sulfate, magnesium chloride, or sodium chloride)
What is calcium carbonate?
400
The most accurate of the following types of glassware: (graduated cylinder, volumetric flask, beaker, erlenmyer flask)
What is a volumetric flask?
400
Which test for fluoride is subject to the most interferences?
What is the SPADNS test?
400
Of the following diseases it is the only waterbourne illness: ( Mumps, Measles, Encephalitis, Thyphoid)
What is Thyphoid?
500
A pH of 10 is this many times as acidic as a pH of 11
What is 10?
500
The titrant used in the alkalinity test.
What is sulfuric acid?
500
A piece of glassware used to measure approximate volumes and to mix chemicals.
What is a beaker?
500
TISAB stands for:
What is total ionic strength adjusting buffer?
500
Four log removal is _____ %
What is 99.99%?