Weighing Balance Calibration Quiz

What is the primary purpose of calibration in weighing balances?

• To clean the equipment regularly

• To compare accuracy with known standards under specific conditions

• To replace worn out parts

• To adjust the air bubble level

Which of the following is NOT a common source of error in weighing readings?

• Air temperature variations

• Barometric pressure changes

• Digital display malfunctions

• Humidity fluctuations

When handling NIST Class S weights, what is the correct procedure?

• Clean them with soap and water before use

• Handle them with bare hands carefully

• Use gloves or tweezers only

• Store them at room temperature

Which test determines how readings are affected by placing weights at different locations on the weighing pan?

• Sensitivity test

• Repeatability test

• Eccentricity test

• Tolerance test

What must be done when a balance is found to be out of tolerance range?

• Continue using it with adjusted calculations

• Have it recalibrated by a qualified technician

• Clean the weighing pan thoroughly

• Perform a self-calibration

What is the proper procedure before taking a reading on an analytical balance?

• Open all doors for ventilation

• Adjust the temperature settings

• Close the sliding door completely

• Remove the chamber housing

Which condition does NOT typically cause erroneous readings?

• Chemical debris on the pan

• Regular maintenance schedule

• Unleveled surface

• Sample not sufficiently cooled

How should chemicals be placed on a weighing balance?

• Directly on the weighing pan

• In a weighing boat or container

• Using bare hands

• Without taring the balance

What is the first step in the calibration procedure?

• Record the weight readings

• Clean the weighing pan

• Check if the air bubble is centered

• Place the standard weights