To preserve the integrity of evidence, your lab should function as an evidence locker or safe, making it a or a secure storage safe.

secure facility

Explanation:

According to my research on the requirements that should be met by a scientific laboratory, I can say that based on the information provided within the question the lab should be a secure facility. This is achieved by by adding different safety features, in order to keep evidence from leaking or disappearing which can ruin cases.

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answer; lead-based paint;