Petroleum products; motor gasoline and aviation fuels; determination of existent gum; jet evaporation method (ISO 6246:1981); German version EN 26246:1993— 9 стр.
Petroleum products - Gum content of light and middle distillate fuels - Jet evaporation method (ISO 6246:1995); German version EN ISO 6246:1996— 10 стр.
Petroleum products - Gum content of light and middle distillate fuels - Jet evaporation method (ISO 6246:1995); German version EN ISO 6246:1996— 10 стр.