At what temperature should flasks be calibrated?

Flasks should be calibrated at a temperature of 77 ± 2°F because this temperature aligns with standard laboratory practices for testing and measuring materials in a controlled environment. The temperature of 77°F is often referenced as a baseline temperature for many equipment calibrations because it represents an average room temperature that minimizes thermal expansion or contraction effects, ensuring accurate measurements. This temperature has been established to provide consistency across testing and to ensure reliability of results.

Calibration at this specified temperature allows for corrections that account for variations in viscosity and other properties of materials being tested. Calibration at temperatures outside this range could lead to inaccurate measurements and unreliable test results, ultimately affecting the quality of asphalt produced. Ensuring calibration is conducted at 77 ± 2°F enhances the precision of density measurements in asphalt work, which is essential for maintaining the integrity of construction and paving operations.