1.0 OBJECTIVE:
To
lay down the calibration procedure of Refractometer to provide a system to calibrate, control and
maintain the equipment used for inspection measuring and test equipment in
order to ensure the correctness of measurement and test status.
2.0 SCOPE:
This
shall be applicable to the Refractometer
of Quality Control Instrument Laboratory.
3.0 RESPONSIBILITY:
3.1
Technical
Assistant/ Helper.
3.2
Q.C Analyst.
4.0 ACCOUNTABILITY:
4.1
Manager-Quality Control.
5.0 MATERIAL AND
EQUIPMENT:
5.1
Refractometer.
5.2
Distilled water.
5.3
Carbon tetrachloride.
5.4
Toluene.
6.0 PROCEDURE:
6.1
Operate the
instrument as per SOP.
6.2
To obtain the
accuracy, the apparatus should be calibrated against distilled water, carbon
tetrachloride and toluene.
6.3
Maintain the
require temperature of the particular liquid as mentioned in annexure-1.
6.4
Observe the
refractive index of the different liquid at temperature as mentioned in
annexure-1.
6.5
Record the results
in annexure-1.
6.6
The performance of
the instrument is satisfactory if the observed refractive indexes are within
the limits as mentioned in annexure-1.
6.7
Frequency:
6.7.1
Once in three
month.
6.8
Record the result
on the “Calibration Record”,
“Calibration Log Book” & paste the “Calibration
Status Sticker” on Refractometer.
6.9 Precautions:
6.9.1
Proper handling of
the instrument.
6.9.2
Temperature should
be carefully adjusted and maintained since refractive index varies
significantly with temperature.
7.0 REVISION LOG:
Revision No.
|
Effective Date
|
Reason
|
00
|
|
New
SOP
|
8.0 REFERENCES:
8.1 Not Applicable.
9.0 ANNEXURES:
Annexure 1:
Calibration record of Refractometer.
Annexure: 1
Calibration
record of Refractometer.
CALIBRATION
RECORD OF REFRACTOMETER
SOP Reference: _____________________
OBSERVATIONS
Remarks: The
calibration procedure of instrument is within tolerance limit and gives satisfactory/ not satisfactory
results.
|
10.0
ABBREVIATIONS:
Abbreviation
|
Expanded Form
|
SOP
|
Standard operating
procedure
|
&
|
And
|
No.
|
Number
|
Ltd.
|
Limited
|
Q.C
|
Quality control
|
Q.A
|
Quality assurance
|
QCEB
|
Quality control
equipment calibration
|
F
|
Format
|
oC
|
Degree centigrade
|
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