GB/T 12687.8-1990
Chemical analysis of nitrate of rare earth for agriculture--Determination for the water insoluble matter content--Gravimetric method (English Version)
- Standard No.
- GB/T 12687.8-1990
- Language
- Chinese, Available in English version
- Release Date
- 1990
- Published By
- General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
- Status
- 2011-11
- Replace By
- GB/T 12687.3-2010
- Latest
- GB/T 12687.3-2010
- Scope
- This standard specifies the determination method for water-insoluble matter in agricultural rare earth nitrate. This standard is applicable to the determination of water-insoluble matter in rare earth nitrate for agricultural use, with a determination range of 0.1% to 1%.
GB/T 12687.8-1990 history
- 2011 GB/T 12687.3-2010 Chemical analysis methods of rare earth nitrate for growth regulator for plant.Part 3: Determination of the water insoluble matter content.Gravimetry
- 1990 GB/T 12687.8-1990 Chemical analysis of nitrate of rare earth for agriculture--Determination for the water insoluble matter content--Gravimetric method
GB/T 12687.8-1990 Chemical analysis of nitrate of rare earth for agriculture--Determination for the water insoluble matter content--Gravimetric method was changed to GB/T 12687.3-2010 Chemical analysis methods of rare earth nitrate for growth regulator for plant.Part 3: Determination of the water insoluble matter content.Gravimetry.
GB/T 12687.8-1990 -All Parts
GB/T 12687.1-2010 Chemical analysis methods of rare earth nitrate for growth regulator for plant.Part 1:Determination of arsenic,mercury,lead,cadmium and chromium contents.Inductively coupled plasma mass spectrometry method
GB/T 12687.2-2010 Chemical analysis methods of rare earth nitrate for growth regulator plant.Part 2: Determination of chlorine content
GB/T 12687.3-2010 Chemical analysis methods of rare earth nitrate for growth regulator for plant.Part 3: Determination of the water insoluble matter content.Gravimetry
GB/T 12687.4-1990 Chemical analysis of nitrate of rare earth for agriculture--Determination of mercury content--Flame atomic absorption spectrophotometric method
GB/T 12687.5-1990 Chemical analysis of nitrate of rare earth for agriculture--Determination of chrome content-sys--Diphenyl carbazide spectrophotometric method
GB/T 12687.6-1990 Chemical analysis of nitrate of rare earth for agriculture--Determination of lead and cadmium content--Flame atomic absorption spectrophotometric method
GB/T 12687.7-1990 Chemical analysis of nitrate of rare earth for agriculture--Determination of thorum content--Spectrometric method with CL-TBP levextred resin separation
GB/T 12687.8-1990 Chemical analysis of nitrate of rare earth for agriculture--Determination for the water insoluble matter content--Gravimetric method