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GB/T 17778-2005 English PDF (GBT17778-2005)

GB/T 17778-2005 English PDF (GBT17778-2005)

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GB/T 17778-2005: Determination of d-biotin in premix
This standard specifies two methods for the determination of d-biotin content in premixed feed, by spectrophotometer and high performance liquid chromatography. Method 1 and Method 2, as specified in this standard, are applicable to the determination of compound premix feed and vitamin premix feed, which has a d-biotin content greater than 1.0 mg/kg. The concentration range of the extract is 2.0 ¦Ìg/mL ~ 20.0 ¦Ìg/mL.

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