©THESTAR 2024/2025 ALL RIGHTS RESERVED 12:54PM.
Fresenius Virtual Learning PCT New Hire
Exam Review Questions And Answers 2025
Update.
How long does the RO have to be running before we perform any water testing? - Answer✔15
minutes
What does IFU stand for? - Answer✔instructions for use
***Instructions written by the manufacturer that are approved by the FDA.
How long does the sample valve need to be flushed after the RO has been running for 15
minutes before a sample is collected? - Answer✔2 minutes
What is the frequency for testing the Total Chlorine? - Answer✔Before the first patient of the
day is put on AND every 4 hours after that.
Name the test trip used to test Total Chlorine: - Answer✔RPC Ultra-Low Total Chlorine Strips
What does TDS stand for? - Answer✔Total Dissolved Solids
The RPC Ultra-Low Total Chlorine Strips are used to test the functionality of what tanks in the
water room? - Answer✔GAC (Granular Activated Carbon) tanks
Which tanks in the water room are responsible for removing Total Chlorine? - Answer✔GAC
tanks (Granular Activated Carbon tanks)
What is the TDS meter used to measure? - Answer✔The TDS meter measures the functionality
of the RO and how well it is removing those particles we do not want to expose the patient to
during treatment.
What 3 things does the pHoenix Meter, pHoenix XL Meter and Myron L-D6 Meter test dialysate
for? - Answer✔1. conductivity
2. pH
3. temperature
1
,©THESTAR 2024/2025 ALL RIGHTS RESERVED 12:54PM.
What strips are used to measure water hardness? - Answer✔SteriChek Water Hardness
Reagent Strips
What do the SteriChek Water Hardness Reagent Strips measure for? - Answer✔water hardness
SteriChek Water Hardness Reagent Strips measure water hardness. What two minerals do
these strips specifically measure that are responsible for hard water? - Answer✔calcium and
magnesium
The water system uses a water softener to remove calcium and magnesium. When calcium and
magnesium are removed, what is added to the water in their place? - Answer✔sodium (Na+)
How often is water hardness tested? - Answer✔2 times a day
When is water hardness (caused by calcium and magnesium) tested? - Answer✔Before the first
patient and at the end of the day
When the water is tested for water hardness (caused by calcium and magnesium) before the
first patient is put on AND at the end of the day (twice daily), what is the acceptable amount of
these minerals found with the SteriChek Water Hardness Reagent Strips? - Answer✔< 20 ppm
(parts per million)
What test strips are used to measure residual chlorine? - Answer✔Water Check RC Strips
When do we use the Water Check RC Strips during the week? - Answer✔after bleach day and
before the first patient is put on
If you find a vile of test strips that are not dated, can we use them for testing purposes? -
Answer✔no
What is the minimum number for GAC (carbon tanks) your clinic can have? - Answer✔2
***Your clinic may have 4 GAC tanks
In a clinic with 2 GAC tanks, the first tank is called the ______ tank, and the second tank is
called the ______ tank. - Answer✔worker, polisher
The worker tank is also called the _______ tank. - Answer✔primary
The polisher tank is also called the _______ tank. - Answer✔secondary
When the opener at your clinic runs the RO for 15 minutes then waits the required 2 minutes
for the sample valve to run before collecting a sample, after which GAC tank is the valve located
for testing Total Chlorine? - Answer✔worker tank (primary tank)
***We are checking the functionality of the worker tank
2
, ©THESTAR 2024/2025 ALL RIGHTS RESERVED 12:54PM.
How many employees have to watch the sample for the Total Chlorine test be obtained? -
Answer✔2 (opener plus a second employee)
***One employee MUST be a RN
Two employees (the opener plus a second employee) must be present when the sample for the
Total Chlorine test is obtained. How many employees total must be present when the test strip
is gently moved back and forth in the sample cup? - Answer✔2
How many times must the sample cup for testing Total Chlorine be rinsed before obtaining the
sample? - Answer✔3
***Just like the Myron Meter
How long does the test strip for Total Chlorine need to be moved back and forth in the water? -
Answer✔60 seconds.
After the test strip for Total Chlorine is moved back and forth in the water for 60 seconds, how
long do the two employees have to wait BEFORE reading the results on the strip? - Answer✔20
seconds
Does the Charge RN have to be present during the Total Chlorine test? - Answer✔yes
If at the beginning of the day before the first patient is put on, the Total Chlorine test result is
equal to 0.10 or greater. Can we repeat the test and go from there? - Answer✔yes
If we are performing the required 4 hour Total Chlorine test in the middle of the day and the
result is equal to or greater than 0.10, what should you do to protect the patients? -
Answer✔Lift the shunt door to put the machine in bypass which interrupts the flow of dialysate
The 4 hour Total Chlorine test result is equal to or greater than 0.10 ppm. The RN instructs the
staff to lift all of the shunt doors on the dialysis machines. Two employees then test a sample
AFTER the polisher carbon tank. The result is less than 0.10 ppm. Is it safe to close the shunt
doors and resume treatment? - Answer✔Yes
If the worker tank (primary tank) fails the Total Chlorine test but the polisher tank (secondary
tank) passes with a result equal to or less than 0.09 ppm, how often does the Total Chlorine test
need to be performed? - Answer✔every 2 hours
If the worker tank (primary tank) fails the Total Chlorine test but the polisher tank (secondary
tank) passes with a result equal to or less than 0.09 ppm, how long can we run on the polisher
tank safely? - Answer✔72 hours
If a patient is exposed to chlorine, what complication can it cause? - Answer✔hemolysis
3
Fresenius Virtual Learning PCT New Hire
Exam Review Questions And Answers 2025
Update.
How long does the RO have to be running before we perform any water testing? - Answer✔15
minutes
What does IFU stand for? - Answer✔instructions for use
***Instructions written by the manufacturer that are approved by the FDA.
How long does the sample valve need to be flushed after the RO has been running for 15
minutes before a sample is collected? - Answer✔2 minutes
What is the frequency for testing the Total Chlorine? - Answer✔Before the first patient of the
day is put on AND every 4 hours after that.
Name the test trip used to test Total Chlorine: - Answer✔RPC Ultra-Low Total Chlorine Strips
What does TDS stand for? - Answer✔Total Dissolved Solids
The RPC Ultra-Low Total Chlorine Strips are used to test the functionality of what tanks in the
water room? - Answer✔GAC (Granular Activated Carbon) tanks
Which tanks in the water room are responsible for removing Total Chlorine? - Answer✔GAC
tanks (Granular Activated Carbon tanks)
What is the TDS meter used to measure? - Answer✔The TDS meter measures the functionality
of the RO and how well it is removing those particles we do not want to expose the patient to
during treatment.
What 3 things does the pHoenix Meter, pHoenix XL Meter and Myron L-D6 Meter test dialysate
for? - Answer✔1. conductivity
2. pH
3. temperature
1
,©THESTAR 2024/2025 ALL RIGHTS RESERVED 12:54PM.
What strips are used to measure water hardness? - Answer✔SteriChek Water Hardness
Reagent Strips
What do the SteriChek Water Hardness Reagent Strips measure for? - Answer✔water hardness
SteriChek Water Hardness Reagent Strips measure water hardness. What two minerals do
these strips specifically measure that are responsible for hard water? - Answer✔calcium and
magnesium
The water system uses a water softener to remove calcium and magnesium. When calcium and
magnesium are removed, what is added to the water in their place? - Answer✔sodium (Na+)
How often is water hardness tested? - Answer✔2 times a day
When is water hardness (caused by calcium and magnesium) tested? - Answer✔Before the first
patient and at the end of the day
When the water is tested for water hardness (caused by calcium and magnesium) before the
first patient is put on AND at the end of the day (twice daily), what is the acceptable amount of
these minerals found with the SteriChek Water Hardness Reagent Strips? - Answer✔< 20 ppm
(parts per million)
What test strips are used to measure residual chlorine? - Answer✔Water Check RC Strips
When do we use the Water Check RC Strips during the week? - Answer✔after bleach day and
before the first patient is put on
If you find a vile of test strips that are not dated, can we use them for testing purposes? -
Answer✔no
What is the minimum number for GAC (carbon tanks) your clinic can have? - Answer✔2
***Your clinic may have 4 GAC tanks
In a clinic with 2 GAC tanks, the first tank is called the ______ tank, and the second tank is
called the ______ tank. - Answer✔worker, polisher
The worker tank is also called the _______ tank. - Answer✔primary
The polisher tank is also called the _______ tank. - Answer✔secondary
When the opener at your clinic runs the RO for 15 minutes then waits the required 2 minutes
for the sample valve to run before collecting a sample, after which GAC tank is the valve located
for testing Total Chlorine? - Answer✔worker tank (primary tank)
***We are checking the functionality of the worker tank
2
, ©THESTAR 2024/2025 ALL RIGHTS RESERVED 12:54PM.
How many employees have to watch the sample for the Total Chlorine test be obtained? -
Answer✔2 (opener plus a second employee)
***One employee MUST be a RN
Two employees (the opener plus a second employee) must be present when the sample for the
Total Chlorine test is obtained. How many employees total must be present when the test strip
is gently moved back and forth in the sample cup? - Answer✔2
How many times must the sample cup for testing Total Chlorine be rinsed before obtaining the
sample? - Answer✔3
***Just like the Myron Meter
How long does the test strip for Total Chlorine need to be moved back and forth in the water? -
Answer✔60 seconds.
After the test strip for Total Chlorine is moved back and forth in the water for 60 seconds, how
long do the two employees have to wait BEFORE reading the results on the strip? - Answer✔20
seconds
Does the Charge RN have to be present during the Total Chlorine test? - Answer✔yes
If at the beginning of the day before the first patient is put on, the Total Chlorine test result is
equal to 0.10 or greater. Can we repeat the test and go from there? - Answer✔yes
If we are performing the required 4 hour Total Chlorine test in the middle of the day and the
result is equal to or greater than 0.10, what should you do to protect the patients? -
Answer✔Lift the shunt door to put the machine in bypass which interrupts the flow of dialysate
The 4 hour Total Chlorine test result is equal to or greater than 0.10 ppm. The RN instructs the
staff to lift all of the shunt doors on the dialysis machines. Two employees then test a sample
AFTER the polisher carbon tank. The result is less than 0.10 ppm. Is it safe to close the shunt
doors and resume treatment? - Answer✔Yes
If the worker tank (primary tank) fails the Total Chlorine test but the polisher tank (secondary
tank) passes with a result equal to or less than 0.09 ppm, how often does the Total Chlorine test
need to be performed? - Answer✔every 2 hours
If the worker tank (primary tank) fails the Total Chlorine test but the polisher tank (secondary
tank) passes with a result equal to or less than 0.09 ppm, how long can we run on the polisher
tank safely? - Answer✔72 hours
If a patient is exposed to chlorine, what complication can it cause? - Answer✔hemolysis
3
