SOP for Operation and Calibration of Conductivity Meter

OBJECTIVE 

To lay down the procedure for the Operation and Calibration of the Conductivity Meter for better and error-free use. 

SCOPE 

This procedure applies to the Conductivity Meter, installed in the Quality Control department at Pharmainfo Limited 

RESPONSIBILITY 

Chemist and above - QC department. 

Checking: Asst. Manager and above - QC department.

PROCEDURE 

Operational Procedure 

• Switch on the mains. 
• Switch on the ‘POWER’. 
• The display shows ‘count in μs/cm ’. 
• Rinse with distilled water and dry it with tissue paper. 
• Ensure that before using the conductivity meter, it should be calibrated. 
• Immerse both probes in the solution to be measured. 
• After a while, the unit will display the temperature and conductivity of the solution in micro siemens/millisiemens units. 
• On completion remove the conductivity cell and temperature probe from the test solution. 
• Rinse the conductivity cell and temperature probe with distilled water and dry it with tissue paper. 
• Keep the cell immersed in distilled water in between and after the measurement. 
• Switch “OFF” the mains.          

Calibration Procedure

Frequency: Daily 

• Rinse the conductivity cell and temperature probe with distilled water and dry it with tissue paper. 
• Dip the conductivity cell in 0.001 M Std. KCl solution 
• Check the standard conductivity switch is in an upward position so that the full range of display is read. 
• Record the observation in Annexure-1 and if necessary turn the ‘standardize’ shaft with a screwdriver to get the correct conductance of the solution. 

REFERENCE

Nil 

ANNEXURE

Annexure No. - 1:  Calibration report of conductivity meter

ABBREVIATION

SOP: Standard Operating Procedure 

Q.A: Quality Assurance 

No. : Number 

Q.C: Quality control 

hr: Hour 

KCl: Potassium Chloride 

Std. : Standard 

REVISION HISTORY

Nil

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