Use Of The Analytical Balance
Preparing the balance for use
Before weighing anything in the analytical balance, you must make sure that it is leveled and zeroed.
Check the leveling on the balance, look for leveling bubbles on the floor of the weighing chamber. If it is not centered, center it by turning the bottom leveling screw to the back of the balance.
After the balance is balanced, close all the chamber doors and press the control bar on the front of the balance. After a few seconds, a line of zeros will appear. This indicates that the balance has been set to zero and can be used.
Weighing a liquid, powder or granular substance
These substances must be weighed using an appropriate weighing container.
Place the weighing container on the balance pan and close the door.
Tare the container by simply pressing the control bar. When the container is placed on the pan, the readout will be zero. In this way, the quality of the sample can be read directly.
Add the substance to be weighed. Be careful not to spill chemicals on the balance. If necessary, you can remove the container from the weighing chamber when adding the sample, provided that no one presses the control bar before you weigh the sample.
Place the sample and its container on the pan, close the chamber door and read the display to find the quality of your sample.
Put a solid object directly on the balance
If the object you need to weigh is solid, you can weigh it directly on the pan. Make sure the balance is zero. Open the chamber doors carefully, place the object on the balance plate, close the door, and read the mass of your object.
Cleaning up and closing the balance
When you finish processing your balance, make sure that you have properly removed any chemicals that may have spilled onto your balance. At the end of the day, you can turn off the balance by gently lifting up the control bar.
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