P-OQ1011-3276-J01
5
Operational
Qualification (OQ)
Automatic Digital
Refractometer RX-5000i
Function Test of RX-5000i Automatic Digital Refractometer
Preface
The RX-5000i has many more functions in addition to measuring refractive index. For example,
an error message will be displayed and printed when zero-setting is attempted with a solution
other than distilled water. The function test is to be executed by an operator who is familiar
with the operation of the RX-5000i. Abnormal operations, such as purposefully causing error
messages to display, are involved. Have the RX-5000i instruction manual ready.
1
．
Instrument Preparation
1) If using a printer, connect it to the RX-5000i and turn the power on.
2) Turn the power on to the RX-5000i. If a printer is connected, the opening message will
be printed.
3) Let the instrument warm up for at least 20 minutes.
4) Set the target temperature (TARGET) to 20.00
℃
in mode 1. Make sure that the
measurement values are displayed in Brix.
5) Make sure that the date and time displayed are correct.
6) Check the print settings. Touch “SET UP” on the home screen. Touch “PRINTER,” and the
print settings will be displayed. Check the following items to be printed: DATE, TIME,
ATAGO, RX-5000i, SERIAL NO, MODE, NOTE, and Brix and nD in PRINT DATA. Touch
“ENTER.” The set up screen will appear. Touch “HOME” on the upper left corner.
7) The home screen will appear. Touch “MEASUREMENT” to display the measurement
screen.
2
．
Necessary Items
1) Distilled water, 30.00% Brix standard sucrose solution, 1.51 nD standard liquid, round
sheets
2) A solution with 1.585 nD or above, such as monobromonaphthalene and methylene
iodide containing sulfur solution
3) Ethyl alcohol, tissue paper
3
．
Function Test
The performance test was carried out in MODE-1 at 20.00
℃
, and the RX-5000i is set to
measure in the Brix scale.
