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2007-02-28

Milk. Determination of urea content. Enzymatic method using change in pH (Reference method)
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2004-10-21

Milk - Determination of urea content - Enzymatic method using difference in pH (Reference method) (ISO 14637:2004)
牛奶.尿素含量的测定.使用pH差的酶法（参考法）（ISO 14637-2004）；德文版EN ISO 14637:2006

2007-03-01

Milk - Determination of urea content - Enzymatic method using difference in pH (Reference method) (ISO 14637:2004)
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2007-06-06

우유 — 유당 함량 측정법 — pH의 차이를 이용한 효소법
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2020-12-31

Milk — Determination of lactose content — Enzymatic method using difference in pH
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2010-05-31

Milk. Determination of lactose content. Enzymatic method using difference in pH
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2010-07-31

ISO 20541. Milk and milk products. Determination of nitrate content. Method using enzymatic reduction and molecular absorption spectrometry after Griess reaction
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2006-05-08