This standard specifies the properties, specifications, tests, inspection rules, packaging and signs of urea in chemical reagents. This standard applies to the examination of urea in chemical reagents.
GB/T 696-2008 Referenced Document
GB 15346 Chemical reagent.Packaging and marking*, 2012-12-31 Update
GB/T 601 Chemical reagent.Preparations of reference titration solutions*, 2016-10-13 Update
GB/T 602 Chemical reagent--Preparations of standard solutions for impurity
GB/T 603 Preparation of preparations and products used in chemical reagent test methods*, 2023-08-06 Update
GB/T 6682 Water for analytical laboratory use.Specification and test methods
GB/T 9728 Chemical reagent.General method for the determination of sulphate
GB/T 9729 Chemical reagent.General method for the determination of chloride
GB/T 9735 Chemical reagent.General method for the determination of heavy metals
GB/T 9738 Chemical reagent.General method for the determination of water insoluble matter
GB/T 9739 Chemical reagent.General method for the determination of iron
GB/T 9741-2008 Chemical reagent.General method for the determination of residue after ignition
HG/T 3484 Chemical reagent.Standard of clear liquor,made from glass dust,and standard of transparence
HG/T 3921 Chemical reagent.Regulations for sampling and acceptance