GB/T 21979-2008 Feed grade—L-Threonine

GB 7300.101-2019 Feed additives—Part 1:Amino acids,their salts and analogues—L-Threonine

中华人民共和国药典　2005年版二部 GB/T 601-2002 Chemical reagent Preparations of standard volumetric solutions GB/T 601-2016 Chemical reagent—Preparations of reference titration solutions GB/T 602-2002 Chemical reagent—Preparations of standard solutions for impurity GB/T 603-2002 Chemical reagent—Preparations of reagent solutions for use in test methods GB/T 603-2023 Chemical reagent—Preparations of reagent solutions for use in test methods GB/T 6435-1986 Method for the determination of moisture in feedstuffs GB/T 6435-2006 Determination of moisture and other volatile mater content in feeds GB/T 6435-2014 Determination of moisture in feedstuffs GB/T 6438-1992 Method for the determination of crude ash in feedstuffs GB/T 6438-2007 Animal feeding stuffs—Determination of crude ash GB/T 6682-1992 Water for analytical laboratory use—Specification and test methods GB/T 6682-2008 Water for analytical laboratory use—Specification and test methods GB 10648-1999 Feed label GB 10648-2013 Feed label GB 13078-2001 Hygienical standard for feeds GB 13078-2017 Hygienical standard for feeds GB 13078.1-2006 Hygienical standard for feed—Limited content of nitrite in feeds GB 13078.2-2006 Hygienical standard for feeds—Toleration of ochratoxin A and zearalenone in feeds GB 13078.3-2007 Tolerance limits for deoxynivalenol in formula feed GB/T 13079-1999 Determination of total arsenic in feeds GB/T 13079-2006 Determination of total arsenic in feeds GB/T 13079-2022 Determination of total arsenic in feeds GB/T 13080-2004 Determination of lead in feeds—Method using atomic absorption spectrometry GB/T 13080-2018 Determination of lead in feeds—Atomic absorption spectrometry GB/T 13080.2-2005 Feed additive—Determination of chelation percentage of iron、copper、manganese and zinc methionine—Gel filtration chromatography GB/T 14699.1-1993 Methods for sampling of feed GB/T 14699.1-2005 Feeding stuffs—Sampling GB/T 6438-2025 Determination of crude ash in feeds GB/T 602-2026 Chemical reagent—Preparations of standard solutions for impurity