CWEA LAB ANALYST GRADE 1
QUESTIONS AND ANSWERS WITH
SOLUTIONS 2024
Celcius - ANSWER (F-32)5/9
HPC media water bath - ANSWER 45`C, 3hr
Precision - ANSWER a measure of how close a series of measurements are to one another
Accuracy - ANSWER how close a measurement is to the true value
Electrical Fire - ANSWER unplug & sodium bicarbonate
analytical balance - ANSWER a device for determining mass that gives highly accurate measurements
top loading balance - ANSWER used to determine mass; not as precise as an analytical balance
triple beam balance - ANSWER instrument used to measure mass, less sensitive than top loading
Coliform - ANSWER Gram-negative rod-shaped bacteria normally present in the intestine; includes E. coli
and other species.
temp and pH - ANSWER temp rises, pH drops. Must measure pH within 15 min of collecting sample
Always add ___ to ___ - ANSWER acid to water
spectrometer - ANSWER a device that spreads light into its different colors
QUESTIONS AND ANSWERS WITH
SOLUTIONS 2024
Celcius - ANSWER (F-32)5/9
HPC media water bath - ANSWER 45`C, 3hr
Precision - ANSWER a measure of how close a series of measurements are to one another
Accuracy - ANSWER how close a measurement is to the true value
Electrical Fire - ANSWER unplug & sodium bicarbonate
analytical balance - ANSWER a device for determining mass that gives highly accurate measurements
top loading balance - ANSWER used to determine mass; not as precise as an analytical balance
triple beam balance - ANSWER instrument used to measure mass, less sensitive than top loading
Coliform - ANSWER Gram-negative rod-shaped bacteria normally present in the intestine; includes E. coli
and other species.
temp and pH - ANSWER temp rises, pH drops. Must measure pH within 15 min of collecting sample
Always add ___ to ___ - ANSWER acid to water
spectrometer - ANSWER a device that spreads light into its different colors
