Water quality. Determination of Kjeldahl nitrogen. Method after mineralization with selenium
水质 凯氏氮的测定 硒矿化后的方法
1993-11-15
KS I ISO 5663
수질 — 킬달법에 의한 질소 측정방법 — 셀레늄에 의한 무기물화 방법
水质凯氏氮的测定硒矿化后法
2023-11-01
ISO 5663-1984
Water quality — Determination of Kjeldahl nitrogen — Method after mineralization with selenium
水质与灰分;凯氏氮的测定——硒矿化后的方法
1984-05-01
UNE-EN 25663-1994
WATER QUALITY. DETERMINATION OF KJELDAHL NITROGEN. METHOD AFTER MINERALIZATION WITH SELENIUM. (ISO 5663:1984).
水质 凯氏氮的测定 方法用硒矿化后 (ISO 5663:1984)
1994-06-14
DIN EN 25663
Water quality; determination of Kjeldahl nitrogen; method after mineralization with selenium (ISO 5663:1984); German version EN 25663:1993
水质;凯氏氮的测定;硒矿化后的方法(ISO 5663-1984);德文版EN 25663:1993