SOP Title: Operation, Cleaning and Calibration of Magnetic Stirrer
- Objective:
To lay down the procedure for Operation, Cleaning and Calibration of Magnetic Stirrer.
- Scope:
This SOP is applicable for Operation, Cleaning and Calibration of Magnetic Stirrer located in Quality Control Laboratory.
- Responsibility:
- Quality Control: To prepare and review the SOP. To follow the procedures laid down for Operation, Cleaning and Calibration of Magnetic Stirrer as per this SOP.
- Engineering Department: To carry out preventive maintenance as per schedule and procedure defined.
- Quality Assurance Department: To review and approve the SOP and Annexures.
- Accountability:
Head Quality Control Department, Head Quality Assurance Department
- Procedure:
| 5.1 | Safety Precautions/Instructions: | |||||||||||||
| 5.1.1 | Ensure all the electrical connections are properly earthed. Ensure the power plug of the centrifuge apparatus is fixed in the socket properly. | |||||||||||||
| 5.1.2 | Ensure that the ON/OFF switch is working properly by switching “ON Magnetic Stirrer. | |||||||||||||
| 5.1.3 | Wear personal protective equipments such as safety glasses, hand gloves during operation of equipment. | |||||||||||||
| 5.1.4 | Before instrument is put ON check that the speed and heat control knobs are in “0” position and the corresponding switches are in OFF position. | |||||||||||||
| 5.2 | Operation: | |||||||||||||
| 5.2.1 | Check the validity of Calibration before starting any operations. | |||||||||||||
| 5.2.2 | Switch ON the main switch of the equipment and then the ON/OFF switch on the equipment. | |||||||||||||
| 5.2.3 | The orange light indicator on the equipment will glow. | |||||||||||||
| 5.2.4 | Insert the magnetic bid slowly in the sample solution to be stirred. | |||||||||||||
| 5.2.5 | Place the sample solution on the equipment at room temperature or at specified temperature on the top flat surface of the equipment approximately in the centre. | |||||||||||||
| 5.2.6 | Set the required speed by rotating ‘SPEED’ knob. | |||||||||||||
| 5.2.7 | To increase the speed of stirring, rotate the ‘SPEED’ knob in clockwise direction and to decrease the speed of stirring, rotate the ‘SPEED’ knob in anti-clockwise direction. | |||||||||||||
| 5.2.8 | If heating is required then set the required temperature on the ‘HEAT’ knob. The red light indicator on the equipment will glow. | |||||||||||||
| 5.2.9 | Ensure that there is no spillage of sample solution on the equipment during speed adjustment. | |||||||||||||
| 5.2.10 | After stirring is completed, remove the sample solution from the magnetic stirrer. | |||||||||||||
| 5.2.11 | Turn off ‘HEAT’ knob and ‘SPEED’ knob by rotating them in anticlockwise direction and bring at “0” position. | |||||||||||||
| 5.2.12 | Switch OFF the ON/OFF switch on the equipment and the main switch. | |||||||||||||
| 5.3 | Cleaning Procedure: | |||||||||||||
| 5.3.1 | Disconnect the equipment from the switch. | |||||||||||||
| 5.3.2 | Clean the top flat surface with wet cloth to remove debris and finally clean with lint free dry cloth. | |||||||||||||
| 5.3.3 | Clean the equipment after use. | |||||||||||||
| 5.4 | Calibration Procedure: | |||||||||||||
| Frequency: Once in a year | ||||||||||||||
| 5.4.1 | Calibration is carried out by external agency as per SOP. | |||||||||||||
| 5.4.2 | Refer Annexure for calibration test to be performed and acceptance criteria.
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| 5.4.3 | Generate the A. R. No. on the “Instrument/Equipment Calibration Register” | |||||||||||||
| 5.4.4 | For issuance of calibration report refer QA SOP. | |||||||||||||
| 5.4.5 | If any breakdown occurs, follow procedure as per SOP | |||||||||||||
- Definitions / Abbreviations :
- Definitions :
- Abbreviations:
| Abbreviation | Expansion |
| SOP | Standard Operating Procedure |
| QC | Quality Control |
| QA | Quality Assurance |
| A. R. No. | Analytical Reference Number |
*Note – Ready to use SOP available in “DOWNLOAD” Section.