SOP (Standard Operating Procedure) for Weighing Balance

SOP for Digital Weighing Balance

1. Ensure that the power supply to the weighing balance is switched ‘OFF’ before cleaning and remove the plug from the socket.
2. Make sure that the weighing balance is placed on a clean and dry surface.
3. Make sure that the weighing balance is clean.
4. Ensure the level of placement of weighing balance, the air bubble/spirit level shall be positioned in the center.
5. Ensure that the calibration status is valid.
6. Connect the power cable to the mains and switch ‘ON’.
7. Press the ON/OFF key, the display will glow.
8. Press “TARE KEY”, 0.00000 mark appears on the display.
9. The stability of the reading is obtained which is indicated by an arrow mark on the left side of the
10. display.
11. Once the stability is attained, the balance is ready for weighing.
12. Make sure that the weighing platform is clean.
13. Open one of the sliding glass doors.
14. A container or butter paper shall be placed on the weighing pan.
15. Place the material to be weighed on the pan.
16. Note down the reading after the arrow mark appears on the left side of the display.
17. Upon completion, press, “ON/OFF” key, “STAND BY” light glows.
18. Clean the balance immediately after weighing.

PRECAUTIONS:

• Handle the balance gently and carefully.
• Do not weigh on the pan directly. Always use butter paper.
• Do not place heavy glassware on the pan. It may damage the instrument Do not weigh corrosive acids & hot materials.
• Do not shift the balance once positioned
• Close the glass doors on the sides and top before recording the weights Do not press the material on the pan with spatula Do not spill any material during weighing.
• Do not use butter paper size more than the area of pan After completion of weighing keep the inside area clean.

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