The length of time water is exposed to a disinfectant (e g , chlorine contact time)
Contact time is the time students are expected to spend in lectures, tutorials, seminars and workshops where they have direct and organised contact with staff and other students
The amount of time the compressed air comes in contact with desiccant in a compressed air dryer
The contact time is the period during which the relevant parameters for sterilization should be guaranteed in all areas of the sterilization item It is deduced from the overall killing and safety loading times [9]