$29.$ The ASTM distillation test helps determine the $\_\_\_\_$ range of petroleum products, which is essential for setting product $\_\_\_\_$ and ensuring $\_\_\_\_$ compliance.

$30.$ True Boiling Point $($TBP$)$ distillation provides a detailed profile of a crude oil's $\_\_\_\_$ characteristics, crucial for refining $\_\_\_\_$ and optimizing $\_\_\_\_.$

$31.$ EFV distillation models the $\_\_\_\_$ equilibrium of crude oil fractions, aiding in the design of $\_\_\_\_$ systems and the improvement of $\_\_\_\_$ efficiency.

$32.$ Atmospheric distillation units operate under $\_\_\_\_$ conditions to produce light and medium $\_\_\_\_$ fractions, while vacuum distillation units extract valuable $\_\_\_\_$ from heavier residues.