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J. J. Keller Federal Drug Testing Custody and Control Form – 5-Ply DOT Compliant Chain of Custody Documentation Brand_Enhance Mobility Oil-Free High Magnification: The 100xDescription J. J. Keller Federal Drug Testing Custody and Control Form: Institutional Grade 5 Ply Chain of Custody Documentation for Strict Regulatory Compliance The J. J. Keller Federal Drug Testing Custody and Control Form (Model JJK 6520) is a specialized, highly regulated compliance document engineered to eliminate audit vulnerabilities and record keeping errors within corporate, transportation, and governmental workplace drug testing programs.