Which of the following is not an ideal location for installing an analytical balance?

• A. Away from drafts caused by air conditioner
• B. Away from direct sunlight
• C. Stable and away from vibrations
• D. None of the above

Answer: (D)

Analytical balances are extremely sensitive to their surroundings, so the environment must be draft-free, stable in temperature, and free from vibrations. Being away from drafts caused by an air conditioner prevents air currents from moving the balance pan and causing unstable readings. Being away from direct sunlight avoids localized heating and temperature changes that can affect the balance’s accuracy. Being stable and away from vibrations keeps the balance from oscillating or transferring vibrations to the weighing pan. Since these conditions describe ideal placement, there isn’t a not-ideal location listed; None of the above is the correct choice.