Analytical Balances — What They Do & How They Are Calibrated
Updated: Oct 22, 2020
One of the most commonly used pieces of equipment in biotech laboratories is an analytical balance. Also known as lab balances, analytical balances are designed to take very precise measurements (up to four places to the right of the decimal point), and often placed on a steady surface — in order to minimize vibrations. Dust and even air currents in the room can affect the operation of an analytical balance, which is why it is always protected with a draft shield.
Calibration of Analytical Balances
The accuracy of scales and balances is influenced by a variety of factors. Analytical balances are no exception! Timely scale calibration services are necessary to keep the instrument working fine. Here is how the calibration of analytical balances is carried out:
Alignment - It is ensured that the air bubble is in the center of the leveling control. If it’s not, the leveling feet are adjusted by turning the foot itself.
Cleaning - The side door is opened, and the wind ring is removed. Any contaminants on the balance tray or surrounding areas are gently dusted off. The wind ring is replaced, and the side door is closed.
Switching to CAL mode -The machine is turned on and switched to CAL mode. When zero appears on the display, the “mode” button is long pressed until it flashes CAL 100.
Sliding the Calibration Lever (Backward)- The calibration lever is slowly slid backward. If everything is done right, 100 appears on the display.
Sliding the Calibration Lever (Forward)-When zero flashes on the display, the calibration lever is slid forward to its original position.
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