What document should be checked to verify that the correct instrument is being used for a particular job?

To verify that the correct instrument is being used for a particular job, the appropriate document to check is the instrument data sheet. The instrument data sheet provides detailed specifications and essential information regarding the instrument's functionality, calibration requirements, and application suitability. This makes it a vital reference when confirming that the right instrument is selected based on the specific requirements of the task at hand.

The packing slip typically includes shipping details and items received but does not contain the specific information required to match an instrument with its intended use. Loop drawings illustrate the flow of signals and connections in a system but do not provide in-depth information about individual instruments. The bill of material lists the components and parts needed for a project but lacks the detailed specifications necessary to ensure the correct use of instrumentation. Therefore, the instrument data sheet is the most relevant document for confirming the appropriateness of an instrument for a specific job.