Final answer:
Items should be in contact with a bleach solution for at least 10 minutes for effective sanitization. The contact time can vary based on factors like concentration and presence of organic material, and it is advised to follow specific guidelines provided by authoritative bodies such as the CDC. b. 10 minutes
Step-by-step explanation:
When using bleach solution for sanitization, items should remain in contact with the solution for a specific amount of time to ensure proper disinfection. According to general guidelines, a bleach solution usually requires contact for at least 10 minutes to effectively sanitize surfaces. This duration allows the bleach to penetrate and kill the microorganisms present.
It is important to note that the effectiveness of chemical disinfectants can vary based on several factors, including the concentration of the disinfectant, temperature, and the presence of organic material. In these situations, the cleaning time or intensity may need to be increased. Moreover, guidelines like the Centers for Disease Control and Prevention (CDC) provide specific instructions for different types of disinfectants and use cases.