This part of GB/T 13255 specifies the ferric hydroxamic acid spectrophotometric method in the determination method of cyclohexanone oxime content in industrial caprolactam.
GB/T 13255.8-2009 Referenced Document
GB/T 6682-2008 Water for analytical laboratory use.Specification and test methods
GB/T 8170 Rules of rounding off for numerical values & expression and judgement of limiting values
GB/T 13255.8-2009 history
2009GB/T 13255.8-2009 Test methods of caprolactam for industrial use.Part 8:Determination of cyclohexanone oxime content
1991GB/T 13255.8-1991 Caprolactam for industrial use--Determination of cyclohexanone oxime content