DIN EN ISO 8988-2006
塑料.酚醛树脂.六亚甲基四胺含量测定.基耶达斯法、高氯酸法和氯化氢酸法(ISO 8988-2006)
Plastics - Phenolic resins - Determination of hexamethylenetetramine content - Kjeldahl method, perchloric acid method and hydrochloric acid method (ISO 8988:2006); English version of DIN EN ISO 8988:2006-11