Which of the following information is NOT required when labeling evidence?

When labeling evidence, it is essential to include critical information that ensures the integrity and traceability of the evidence throughout the investigation and any subsequent legal proceedings. This includes the case number, which connects the evidence to a specific incident; the date and time of collection, which documents when the evidence was gathered; and the collector's name or initials, which identifies who collected the evidence, ensuring accountability and chain of custody.

The time spent collecting the evidence, however, is not a standard requirement for evidence labeling. While it may provide context for the investigation process, it does not have a direct impact on the legal standing of the evidence or its admissibility in court. Therefore, this information is not mandated on evidence labels, making it the correct answer among the options provided.