Final Answer:
Iodine sanitizer must have ⁴/₂% concentration. Therefore, the correct option is d. ⁴/₂%.
Step-by-step explanation:
Iodine sanitizer concentration is typically expressed in parts per million (ppm), and ⁴/₂% is equivalent to 40 ppm. This concentration is commonly recommended for effective sanitization in various industries, including food service and healthcare. It strikes the right balance between potency and safety, effectively eliminating bacteria, viruses, and other microorganisms without posing health risks to consumers or users.
Iodine at a concentration of 40 ppm is acknowledged as an efficient sanitizer, particularly in the food industry, where it's used to sanitize equipment, surfaces, and even as a disinfectant in wash solutions for produce. This concentration demonstrates adequate efficacy against a broad spectrum of pathogens, ensuring sanitation standards are met without leaving harmful residues.
This concentration is established based on extensive research and regulatory guidelines, ensuring that it effectively targets and destroys microorganisms while staying within safe limits for human exposure. It provides a reliable level of protection against contamination without causing adverse effects, making it a preferred choice in numerous sanitization applications. Therefore, the correct option is d. ⁴/₂%.