The document specifies a method for the determination of the chemical resistance of tanks of glass reinforced thermosetting resins for the underground storage of liquids by measuring the change in characteristic(s) of exposed and unexposed test samples taken from the tank wall.
DIN EN 977:1997 history
1997DIN EN 977:1997-09 Underground tanks of glass-reinforced plastics (GRP) - Method for one side exposure to fluids; German version EN 977:1997
1997DIN EN 977:1997 Underground tanks of glass-reinforced plastics (GRP) - Method for one side exposure to fluids; German version EN 977:1997