UL SUBJECT 139-1997
Outline of Investigation for High-Expansion Foam-Extinguishing System Equipment and Concentrates (Issue Number: 4)

Standard No.

UL SUBJECT 139-1997

Release Date

1997

Published By

Underwriters Laboratories (UL)

Status

Be replaced 2014-01

Replace By

UL SUBJECT 139-2009

Latest

UL SUBJECT 139-2018

UL SUBJECT 139-1997 history

• 2018 UL SUBJECT 139-2018 UL Outline for Investigation Medium- and High-Expansion Foam-Extinguishing System Equipment and Concentrates (Issue 7)
• 2014 UL SUBJECT 139-2014 Outline of Investigation for Medium- and High-Expansion Foam-Extinguishing System Equipment and Concentrates (Issue 6)
• 2009 UL SUBJECT 139-2009 OUTLINE OF INVESTIGATION FOR HIGH-EXPANSION FOAM-EXTINGUISHING SYSTEM EQUIPMENT AND CONCENTRATES (Issue 5)
• 1997 UL SUBJECT 139-1997 Outline of Investigation for High-Expansion Foam-Extinguishing System Equipment and Concentrates (Issue Number: 4)