1. Choose the right environment. Analytical balances are highly sensitive instruments that need the proper environment to perform well. When deciding where to place your balance, be sure to choose a place with the following:

• A solid, stone table in a dedicated, low-traffic area
• A vibration-free area
• Away from windows and direct sunlight
• Away from drafts and air conditioning
• Away from electromagnetic interference

2. Connect the balance to the power supply.

3. Turn on the balance and let it adjust to the room’s temperature for at least 2 hours before using it.

4. Ensure the balance is level.

5. Set the date and time.

6. Perform an internal balance adjustment to ensure it meets its specifications.

7. Perform a calibration.

Before performing a measurement, it’s important to have the balance calibrated. Calibrating a balance involves comparing its measurement results to a known standard or reference weight. This helps to identify and correct any errors in the balance's readings, which can then ensure accurate and reliable results. This can be done by a calibration technician using specialized calibration weights. METTLER TOLEDO offers a variety of calibration and validation services, which can be tailored to your specific needs.

8. Begin weighing:

• When you’re ready to begin weighing, open the draft shields and place your tare container in the center of the weighing pan.
• Close the draft shield, and then hit the “tare” button to subtract the container’s weight from your final measurement result.
• Carefully add the sample to be weighed, using a clean spatula or tweezers to avoid any contamination or damage to the balance or the sample.
• Record the weight displayed on the balance.
• For more specific tips and to further improve your weighing technique, download our “Weighing the Right Way” guide.