ASTM-D4840 › Complete Document History
Standard Guide for Sample Chain-of-Custody Procedures

Complete Current Edition:
   1999 R18(E1) EDITION - REAPPROVED IN 2018 WITH EDITORIAL CORRECTION - Aug. 15, 2018

Obsolete Revision Information:
   1999 R10 EDITION - REAPPROVED IN 2010 - March 1, 2010
   1999 R04 EDITION - REAPPROVED IN 2004 - Jan. 1, 2004
   1999 EDITION - SAMPLE CHAIN-OF-CUSTODY PROCED - Dec. 10, 1999
   1995 EDITION - SAMPLING CHAIN-OF-CUSTODY PROC - Dec. 10, 1995
   1988 R93(E1) EDITION - SAMPLING CHAIN-OF-CUSTODY PROC - May 1, 1993
   1988 EDITION - SAMPLING CHAIN-OF-CUSTODY PROC - June 24, 1988