P-SOP0803-1410-E01
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Standard Operating
Procedure
（
SOP
）
Multi-Wavelength Abbe Refractometer
DR-M2
6-2. Proper care
Depending on the operational malfunction (abnormalities) of the DR-M2, decide on the
proper care to correct.
The cause of operational malfunction (abnormalities) can be divided into two areas.
1)
Measured value becomes lower or higher due to a mistake in operation.
a.
Sample from the previous measurement may have been left on the prism
surface.
b.
Distilled water was left on the prism surface.
In case of the above malfunctions, the end user can resolve by ensuring the above
points are checked and avoided. Carry out operation and measurement again.
Perform step 3 (Periodical inspection of the preceding clause).
2
）
Failure in machinery or parts
When the DR-M2 does not operate properly due to mechanical trouble, under the
same measuring conditions, degradation of the parts inside the unit and/or failure is
assumed. The DR-M2 may be in need of repair.
a.
Consult with the supervisor of the refractometer.
b.
Record the trouble on an operating work report.
c.
Contact the trading company that you purchased the refractometer.
d.
Contact the maker of the refractometer. (Make a contact list of the trading
company where the refractometer was purchased along with the
manufacturer.)
e.
In case of repair, decide on the method of care and put them in writing.
7. Establishment and record of revision
When this "standard operating procedure document" is revised, record the changes on this
sheet and sign the approval column.
Record of revision
Approval column
Author’s
signature
Approved
by:
Date
Establishment
