What is the acceptable range for the calibration syringe volume?

What is the acceptable range for the calibration syringe volume?

• A. 2.0-3.0 liters
• B. 2.895-3.105 liters
• C. 2.9-3.2 liters
• D. 3.0-3.5 liters

Answer: (B)

The main idea is that calibration syringes have a fixed nominal volume and a defined acceptable tolerance around that value. For a 3.0 L calibration syringe, the volume delivered when the plunger is fully actuated should fall within a small, specific range to ensure the measurement device is accurate. The acceptable range of 2.895 to 3.105 L centers on 3.0 L and allows a tolerance of ±0.105 L. This keeps the delivered volume close enough to the nominal value so that devices used to measure respiratory volumes remain reliable. Ranges that don’t center on 3.0 L or are much wider (or exclude volumes below 3.0 L) don’t provide the consistent accuracy required, which is why 2.895–3.105 L is the best choice.

The main idea is that calibration syringes have a fixed nominal volume and a defined acceptable tolerance around that value. For a 3.0 L calibration syringe, the volume delivered when the plunger is fully actuated should fall within a small, specific range to ensure the measurement device is accurate.

The acceptable range of 2.895 to 3.105 L centers on 3.0 L and allows a tolerance of ±0.105 L. This keeps the delivered volume close enough to the nominal value so that devices used to measure respiratory volumes remain reliable.

Ranges that don’t center on 3.0 L or are much wider (or exclude volumes below 3.0 L) don’t provide the consistent accuracy required, which is why 2.895–3.105 L is the best choice.