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SOP (Standard Operating Procedure) for weighing balance Download Notes PDF BPharmacy 7th Semester 2022
📑 BP701T Instrumental Methods of Analysis
| Title: | SOP (Standard Operating Procedure) for weighing balance |
| Course: | BPharmacy |
| Semester/Year: | 7th Semester |
| Subject: | BP701T Instrumental Methods of Analysis |
| Session: | 2022 |
| Category: | Notes |
| BPharmacy Practical and Experiments Standard Operating Procedure (SOP) Pharmaceutical Engineering | |
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SWAMI DAYANAND POST GRADUATE INSTITUTE OF PHARMACEUTICAL SCIENCES, PGIMS, ROHTAK
SOP for Digital Weighing Balance
- Ensure that power supply to the weighing balance is switched ‘OFF’ before cleaning and remove the plug from the socket.
- Make sure that the weighing balance is placed on a clean and dry surface.
- Make sure that the weighing balance is clean.
- Ensure the level of placement of weighing balance, the air bubble/spirit level shall be positioned in the center.
- Ensure that the calibration status is valid.
- Connect the power cable to the mains and switch ‘ON’.
- Press ON/OFF key, display will glow.
- Press “TARE KEY”, 0.00000 mark appears on the display.
- The stability of the reading is obtained which is indicated by an arrow mark on the left side of the display.
- Once the stability is attained, the balance is ready for weighing.
- Make sure that the weighing platform is clean.
- Open one of the sliding glass doors.
- A container or butter paper shall be placed on the weighing pan.
- Place the material to be weighed on the pan.
- Note down the reading after the arrow mark appears on the left side of the display.
- Upon completion, press, “ON/OFF” key, “STAND BY” light glows.
- Clean the balance immediately after weighing.
PECAUTIONS:
- 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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