Procedure For Operation and Calibration of Top Pan Balance

1.0    OBJECTIVE

1.1    To lay down a procedure for operation of Top pan balances (Mettler Toledo) Model PB1501-s

2.0    SCOPE

2.1    This SOP covers the procedure operation of Top pan balances and is applicable to Microbiology Lab –I and II, Unit -I

3.0    RESPONSIBILITY        

3.1     Microbiologist

4.0    ACCOUNTABILITY    

    4.1    Head - Quality Control

5.0    PROCEDURE        
    
5.1    OPERATION

5.1.1    Ensure that the working area and balance are clean.
5.1.2    Clean the weighing pan with a small brush if required.
5.1.3    Adjust the spirit level of the balance to center by rotating the leveling knobs provided at the bottom if required.
5.1.4    Connect the instrument to 230 volts A/C power supply and put on the power switch.
5.1.5    Press and hold “ON/ OFF” button.
5.1.6    Press the ‘TARE’ button before weighing; ensure that 0.0 gm is displayed on the digital display board, if required grams can be changed in to kg by pressing “F” key.
5.1.7    Weigh the sample to the required quantity.
5.1.8    Press and hold “ON/OFF” button to switch off the balance after completion of weighing. 
5.1.9    Put off the power supply.
5.1.10    Enter the details of usage in Equipment usage log book .

5.2    CALIBRATION

5.2.1    Frequency of calibration is once in Six months by external party.
 

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Procedure, operation, calibration, microbiology