What does the term "should" signify in the S500 and S520?

The term "should" in the context of the S500 and S520 signifies suggested actions. This indicates that while the outlined actions are advisable and beneficial for achieving optimal outcomes, they are not mandatory requirements. The use of "should" allows for some discretion, which acknowledges that certain circumstances may necessitate alternative approaches or modifications to fit specific situations. This flexibility is essential in the microbial remediation process, as each scenario can have unique variables that may influence the best course of action.

In contrast, the language used to indicate mandatory actions would be more definitive, conveying an obligation to follow specific protocols. Recommendations, while closely tied to "should," imply a level of endorsement rather than mere suggestion, and prohibited methods would indicate actions that are explicitly disallowed, which is not the case with "should." Thus, understanding that "should" conveys advisability rather than compulsion is crucial for those implementing the guidelines in practice.