What is the ppm (parts per million) for sanitizers used in the process?

The correct answer is 200 ppm. In the context of sanitizers used in food safety and sanitation practices, specific concentration levels are critical for effectiveness. The level of 200 parts per million is typically the recommended concentration for sanitizing solutions, particularly when using chlorine-based sanitizers. This concentration ensures that pathogens are effectively killed without leaving harmful residues.

Higher concentrations, such as those in the other answer choices, may not provide additional benefits and could even lead to adverse effects, like corrosion of surfaces or harmful chemical residues. On the other hand, lower concentrations may not be effective enough to ensure the necessary level of sanitation to meet health and safety standards. Thus, understanding the appropriate ppm level is essential for maintaining hygiene and safety in any environment where sanitization is crucial.