Rotational Viscometer Calibration SOP



1.0  OBJECTIVE:
To lay down the calibration procedure of Viscometer.
2.0  SCOPE:
This shall be applicable to the Viscometer of Quality Control 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  Viscometer.
6.0  PROCEDURE:
6.1  Operate the instrument as per SOP. 
6.2  Calibrate the instrument with standard viscosity solution 10, 100, 500, 5000, 12500 cps using respective spindles and record the results in annexure-1.
6.3  The performance of the instrument is satisfactory, if the measured viscosity is within the given tolerance limit, otherwise follow the SOP.
6.4  Frequency:
6.4.1        Once in three month.
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 Viscometer.

Annexure: 1
Calibration record of Viscometer
CALIBRATION RECORD OF VISCOMETER
Calibration date
Date of last calibration done
Next due for calibration



INSTRUMENT DETAILS:
Instrument name  
Viscometer
Instrument make

Instrument identification no.

Frequency
Once in three month

Sr.#
Fluid of labeled viscosity in cps
Certified value in cps
Spindle
Speed factor at 25oC
(A)
Reading
(B)
Viscosity in cps
A x B
Acceptance criteria % Tolerance from certified viscosity
1.       
10cps





±10%
2.       
100cps





±7.5%
3.       
500cps





±7.5%
4.       
5000cps





±5.0%
5.       
12500cps





±5.0%
Conclusion: Satisfactory/ Not satisfactory.
Calibrated by/date
Checked by/date



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
cps
Centipoise
oC
Degree centigrade
%
Percentage


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