P-OQ1011-3276-J01
3
Operational
Qualification (OQ)
Automatic Digital
Refractometer RX-5000i
6) Make sure that the target temperature (TARGET) is set to 20.00
℃
.
6
．
Measurement
1) Apply distilled water on the prism and touch “ZERO.” “WAITING” will be displayed, and
once the prism temperature (PRESENT) reaches the target temperature (TARGET),
“READING” will appear and then “ZERO SET END” will appear in a few seconds. When a
printer is connected, “ZERO SET END” will be printed.
2) Measure distilled water and record the measurement value in the measurement data
log sheet. The measurement values in nD and Brix as well as the measurement
temperature will be printed for all subsequent measurements taken.
3) Measure the 10.00% Brix standard sucrose solution and record the measurement value
in the log sheet.
4) Measure the 30.00% Brix standard sucrose solution and record the measurement value
in the log sheet.
5) Place a round sheet and measure the 1.51 nD standard liquid. Record the measurement
value in the log sheet.
6) Repeat the steps 2) through 5) for 4 times. Record the measurement value each time.
7
．
Recorded Data
Review the recorded measurement data.
1) Cross-reference the data recorded on the log sheet and the data printed from the
printer.
2) The RX-5000i stores the last 500 measurement data. Once the maximum memory
capacity is reached, the instrument will automatically delete the oldest measurement
value to accommodate a new measurement value.
3) The stored data may be recalled on the measurement screen. Cross-reference with the
data recorded on the log sheet.
4) The stored data may be printed out at a later time.
Using the methods described above, check the consistency between the “recorded” and
“recalled” data.
8
．
Publication to Operational and Performance Qualification Test Results
Report
1) Record the measurement data on the Operational and Performance Qualification Test
Results Report (found at the end of this document).
2) Calculate and add the average values as well as the margin of error.
3) Compare with the standard of evaluation.
