Final answer:
The speed of evacuation is not affected by the brand of micron gauge used; it is determined by physical properties such as equipment size, temperature, and moisture.
Step-by-step explanation:
The factor that does NOT affect the speed of evacuation from the options provided is: 4) The brand of micron gauge used. Factors that do affect evacuation speed include the size of the equipment, the ambient temperature, and the amount of moisture in the system. These factors relate to the kinetic-molecular theory of gases, which explains how gas particles' movement affects gas pressure. The brand of micron gauge, however, is not related to the physical properties of the gas or the system but is rather a tool used for measuring the vacuum during evacuation.