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SOP for Daily Verification of Weighing Balance

OBJECTIVE
To lay down the procedure for daily verification of all weighing balance

SCOPE
This SOP is applicable for verification of all weighing Balance, at XYZ Ltd.

RESPONSIBILITY
QC Officer


PROCEDURE
  • Select the standard calibrated weights for various balances based on the capacity and operating range of the balance as mentioned below and check the calibration status.
  • Before verification the balance, clean the weighing platforms and pans with dry mop. Ensure that the balance rests evenly, which can be ensured with the help of sprit level.
  • Adjust the balance to zero. Place the calibrated standard weight one by one on the weighing platform/pans at the “*” marked places shown in the following diagram and check the readings. The different should not be more then specified least count. If it is stable at all working points record the point “E” observation in annexure.


  • If it conforms to acceptance criteria, affix the status label “O.K” with date.
  • Always use standard weights and balance, which are certified by Weights and Measures department.
  • Selection of Standard Weights for various balances.
  • If it does not conform to acceptance criteria, maintenance department shall be inform for corrective measures and a status label “under maintenance” shall be affixed.

ABBREVIATIONS
O.K. : All correct

REFERENCES
Nil

ANNEXURE
Annexure I – Balance weigh check record

 
REVISION HISTORY
Nil

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