ASTM D4840 Archives

Dripping water into test tube to test sample through ASTM D4840 sample chain-of-custody procedures.

ASTM D4840: Sample Chain-of-Custody Procedures Standard

February 3, 2022January 11, 2023Brad Kelechava

What is Sample Chain-of-Custody? During criminal investigations, laboratory testing often is necessary to attain data from evidence. Proper sample chain-of-custody procedures instill integrity and nurture […]