Why is it advisable to have a black light installed at the wash station?

Having a black light installed at the wash station is particularly effective for checking the cleanliness of surfaces after washing. The black light can reveal substances that are not visible under regular lighting conditions, such as proteins, organic materials, or certain residues that may still be present after a wash cycle. This is crucial in environments where hygiene standards are strict, such as in food preparation or medical facilities, as it helps ensure that all contaminants have been effectively removed.

The other options address different aspects of visibility and operations but do not capture the specific purpose of a black light in this context. Providing better visibility for inspections or ensuring proper lighting during washing might be beneficial, but they do not directly relate to the unique capability of a black light to highlight residues. Reducing glare during operations can improve working conditions overall, but it falls outside the primary functionality of a black light in a washing context. Thus, having a black light is particularly significant for checking the effectiveness of the wash cycle by making any remaining contaminants visible.