A high level disinfectant should be used according to which guideline?

Using a high-level disinfectant according to the manufacturers' instructions is essential for ensuring effective sterilization and safety. The manufacturers of disinfectants provide specific guidelines on how their products should be used, including the correct concentration, contact time, and any necessary pre-cleaning steps. Following these instructions helps to make sure that the disinfectant works as intended to eliminate harmful pathogens effectively.

The other options, while important components of infection control protocols or relevant guidelines, are secondary to the manufacturers' instructions, which provide the essential details specific to the product being used. Therefore, adhering to these specific guidelines is critical to achieving the desired disinfection outcomes while maintaining equipment integrity and safety standards.