ANSI-C78.42 › Complete Document History
High-Pressure Sodium Lamps

Complete Current Edition:
   2009 S22 EDITION - STABILIZED IN 2022 - Jan. 1, 2022

Obsolete Revision Information:
   2009 R16 EDITION - REAFFIRMED IN 2016 - Jan. 1, 2016
   2009 EDITION - ELECTRIC LAMPS - HIGH-PRESSURE SODIUM LAMPS (HPS) LAMPS - Jan. 1, 2009
   2007 EDITION - ELECTRIC LAMPS - HIGH-PRESSURE SODIUM LAMPS (HPS) LAMPS - Jan. 1, 2007
   2004 EDITION - ELECTRIC LAMPS - HIGH-PRESSURE SODIUM LAMPS (HPS) LAMPS - Jan. 1, 2004
   1995 EDITION - ELECTRIC LAMPS - GUIDELINES FO - Jan. 1, 1995