SOP for Calibration of Brook Field Viscometer

1.0 OBJECTIVE

To calibrate the equipment for reliable and accurate results.

2.0 SCOPE

This procedure is applicable to the Brook field viscometer, installed in the quality control department.

3.0 RESPONSIBILITY

3.1 Doing: Technical Assistant
3.2 Checking: Executive /Manager

4.0 ACCOUNTABILITY

Head of the Department

5.0 PROCEDURE

Frequency of calibration: Once in three month
5.1 Operate the instrument as per SOP
5.2 Calibrate the instrument with standard viscosity solution of 10, 100, 500, 5000 & 12,500 cps using respective spindles and record the results in Annexure-I
5.3 The performance of the instrument is satisfactory, if the measured viscosity is within the given tolerance limit, otherwise follow the S.O.P.

6.0 ABBREVIATION

6.1 0C = Centigrade
6.2 S.O.P. = Standard operating procedure
6.3 cps = Centipoise

Annexure-I 

CALIBRATION REPORT OF BROOK FIELD VISCOMETER

CALIBRATION DATE	DATE OF LAST CALIBRATION DONE	NEXT DUE FOR CALIBRATION

INSTRUMENT DETAILS
INSTRUMENT NAME	INSTRUMENT MAKE	INSTRUMENT IDENTIFICATION NO.

OBSERVATION

Sr. No.	Fluid of Labeled viscosity in cps	Certified Value in cps	Spindle	Speed factor at 250C (A)	Reading (B)	Viscocity in cps AXB	Acceptance criteria % Tolerance from certified viscosity
01	10						+/- 10%
02	100						+/- 7.5%
03	500						+/- 7.5%
04	5000						+/- 5.0%
05	12,500						+/- 5.0%

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