When bottom loading is used, a positive means shall be provided for loading a predetermined quantity of liquid.

When bottom loading is used, a positive means shall be provided for loading a predetermined quantity of liquid.

• A. Top loading
• B. Bottom loading
• C. Side loading
• D. Gravity loading

Answer: (B)

Bottom loading involves delivering liquid through a bottom connection, where the liquid entering the receiving vessel isn’t as easily observed and the level can be harder to judge during transfer. Because of this, it’s essential to have a positive means to control how much is loaded. A calibrated flow meter or other automatic quantity-control device can stop the transfer at a preset amount, ensuring the exact quantity is delivered and preventing overfill. This automatic, definite end point is what makes a positive means necessary with bottom loading. Other loading methods rely more on level visibility or manual stopping, so the explicit requirement described is specific to bottom loading.

Bottom loading involves delivering liquid through a bottom connection, where the liquid entering the receiving vessel isn’t as easily observed and the level can be harder to judge during transfer. Because of this, it’s essential to have a positive means to control how much is loaded. A calibrated flow meter or other automatic quantity-control device can stop the transfer at a preset amount, ensuring the exact quantity is delivered and preventing overfill. This automatic, definite end point is what makes a positive means necessary with bottom loading. Other loading methods rely more on level visibility or manual stopping, so the explicit requirement described is specific to bottom loading.