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Policies,Clinical,UWHC Clinical,Department Specific,Hemodialysis

Phoenix™ Dialysate Meter Readings, Quality Assurance (QA), Calibration, Cleaning and Disinfection (2.9)

Phoenix™ Dialysate Meter Readings, Quality Assurance (QA), Calibration, Cleaning and Disinfection (2.9) - Policies, Clinical, UWHC Clinical, Department Specific, Hemodialysis

2.9

University of Wisconsin Hospital and Clinics
Inpatient Hemodialysis
Department 55400

TITLE: Phoenix™ Dialysate Meter
Readings, Quality Assurance (QA),
Calibration, Cleaning and Disinfection

POLICY #: 2.9
REVISED: October 2016
Page 1 of 5
Nurse Manager: Joan Watson, MS, RN
Director: Ann Malec, DNP, RN, NEA-BC
Medical Director: Alex Yevzlin, MD


I. PURPOSE

To verify that internal hemodialysis machine dialysate conductivity reading are within allowable
tolerance standard when compared to an external (pHoenix™) dialysate conductivity/pH meter.

To ensure that the pHoenix meter is QA tested, calibrated, cleaned and disinfected according to
manufacture guidelines for use.

II. POLICIES

A. Quality Assurance Testing will be performed daily prior to performing dialysate readings
and results recorded on the pHoenix Meter Daily Log sheet.
 Allowable tolerance when compared with 14.0 conductivity standard solution is
+/- 0.2 mS/cm or 13.8 to 14.2 mS/cm as displayed on the meter.
 Allowable tolerance when compared with 7.0 pH standard solution is +/- 0.1 or
6.9 to 7.1.
B. Level 1 calibration will be performed when the device is outside the acceptable tolerance
levels listed above and adjusted accordingly.
C. The internal hemodialysis machine dialysate conductivity reading must be within an
allowable tolerance standard (+/- 0.5 mS/cm) and the pH level as displayed on the
pHoenix meter must be between 6.5 and 7.5 prior to dialysis treatment.
D. The pHoenix meter will be disinfected, cleaned and stored according to the manufactures
guideline for use.

III. GENERAL INFORMATION

A. See Material Safety Data Sheet for more detailed information on cleaning and standard
solutions.

IV. EQUIPMENT
Bleach Dilution Table


pHoenix Meter station equipped with Standard solutions, RO water and Neo-care
pHoenix Meter
Container Bleach RO Water Total Volume
Plastic Beaker 10 mL 990 mL 1000 mL

Page 2 of 5

















V. PROCEDURES
A. QA testing - Start of the day
1. Expel the Neo-Care (storage solution) into an appropriate receptacle. Rinse the
meter 4 times with fresh RO water to ensure residual Neo-Care has been removed.
2. Connect the meter to the 7.0 pH
solution. Hold the syringe with
the plunger elevated so that any
air bubbles remain in the syringe.
3. Draw the solution through the cell
and then expel several times.
Observe the reading as the
solution flows into the cell. Be
sure the reading is 7.0 +/- 0.1.
4. Record the results on the UWHC
Dialysis Phoenix Meter Daily
Log. If the reading is not within
the acceptable limits perform the
calibration procedure.
5. Rinse the meter 4 times with RO water.
6. Connect the meter to the 14.0 mS/cm Solution. Hold the syringe with the plunger
elevated so that any air bubbles remain in the syringe. Draw the solution through
the cell and then expel several times. Observe the reading as the solution flows
into the cell. Be sure the reading is 14.0 +/- 0.2. Record the results on the
pHoenix Meter Daily Log Sheet. If the reading is not within the acceptable limits
perform the calibration procedure.
7. Rinse the meter 4 times with RO water.
B. Dialysate Sampling.
1. Press and release the MODE switch to turn meter on.
Display
Readings
Arrow
(toggle keys)
Distal Port with
Luer Slip Tip Adapter
Mode
Button
Syringe

Page 3 of 5
2. Connect the Distal Port with Leur Slip tip adapter into the dialysate sampling port.
Be sure to insert the adapter far enough into the port to depress the spring plate.

3. Draw dialysate solution through the cell. Dialysate should be flowing while the
measurement is taken. When no air is seen and the reading is stable, press
MODE to hold reading. Record readings and press MODE again to release the
hold feature.
4. Repeat steps 2- 5 for conductivity.
 PH READING MUST BE 6.5 TO 7.5.
 CONDUCTIVITY READING MUST BE +/- 0.5mS/cm OF THE
DISPLAYED CONDUCTIVITY ON THE MACHINE.
C. Cleaning/Disinfecting (to be completed after the 2
nd
shift has started).
1. Draw a 1% bleach solution into the meter and allow it to remain in the meter for
10 minutes. Expel the bleach solution by rinsing 10 times with RO water. DO
NOT LET THE SOLUTION REMAIN IN THE METER LONGER THAN 10
MINUTES AS DAMAGE WILL OCCUR.
2. Record date, time and initials when completed on the UWHC Dialysis Phoenix
Meter Daily Log.
3. At the end of subsequent shifts, rinse the syringe with RO water 10 times to insure
residual dialysate has been removed.
D. Neo-care Over-night storage.
1. Rinse the meter with RO water 10 times.
2. Draw Neo-Care into the syringe 2 times.
3. Disconnect the meter from the Neo-Care solution and expel the solution into an
appropriate receptacle.
4. Draw the syringe halfway back pulling air into the cell, then cap the sample port.
5. Place meter in rack for overnight storage.
* If meter used is required during the night, follow the normal start of day
procedure, obtain readings and complete Neo-Care overnight storage procedure.

Page 4 of 5
E. Level 1 – Calibration
1. Calibration is required if the meter is out of range for either pH or conductivity
during QA testing. Record the date, meter number and the function calibrated in
the appropriate column.
2. Press and hold the MODE switch until a flashing “CAL” appears. Within 3
seconds press either ARROW on back of meter.
3. A steady CAL symbol will be displayed.
4. Press the MODE button to toggle between pH and conductivity functions
depending on which reading needs to be calibrated.
5. Draw the appropriate solution through the meter until stable.
6. Adjust the displayed reading up or down using the arrow keys on the back of the
meter to match the standard solution value 14.0 for conductivity or 7.0 for pH.
7. Press and hold the MODE switch until the “CAL” symbol disappears. You will
then see a C1 and C2 to confirm new calibration is accepted. If “ER” displays the
values were not saved. Repeat steps 2 thru 7 and if the error message persists
contact the Mesa Laboratory for repairs.

VI. DOCUMENTATION

A. Record procedures performed on the UWHC Dialysis Phoenix Meter Daily Log.
1. Start of day, record the date, time, and QA readings performed note if the QA
readings are outside established parameter and the meter requires level 1
calibration.
2. Between shifts record the time and initial that when the disinfect procedure was
completed.
3. End of day and prn as needed record the time and initial when NeoCare cleaning
procedures performed.

VII. Resources
o pHoenix Meter Calibration Guide
o Appendix A: UWHC Dialysis Phoenix Meter Daily Log


REVIEWED: 12/1/2016
Jmw06/01/13



Page 5 of 5
Appendix A: UWHC Dialysis Phoenix Meter Daily Log Sheet
Year_________ Meter SN# ________

Start of Day Between shifts End of Day Afterhours*
Date
xx/xx/xx
Time
0000
PH (7)
+/- .2
Initials
Conductivity
(14) +/- .2
Initials
Level 1
Calibration
Y/N Initials
Time Bleach
Disinfect
Initials
Time Neo Care
Cleaning
Initials
Time Neo Care
Cleaning
Initials
/ / /
/ / /
/ / /
/ / /
/ / /
/ / /
/ / /
/ / /
/ / /
/ / /
/ / /
/ / /
/ / /

* If meter used is required during the night, follow the normal start of day procedure, obtain readings and complete Neo-Care overnight storage procedure.
Signature = Initials


___________________/________-
___________________/________- ___________________/________-
___________________/________-
___________________/________- ___________________/________-