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 (English Version)

Standard No.

GB/T 12687.3-2010

Language

Chinese, Available in English version

Release Date

2011

Published By

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China

Status

Withdraw 2012-12

Latest

GB/T 12687.3-2010

Replace

GB/T 12687.8-1990

Scope

This part of GB/T 12687 specifies the method for the determination of water-insoluble matter in rare earth nitrate plant growth regulators. This section applies to the determination of the amount of water-insoluble matter in rare earth nitrate plant growth regulators. Measuring range: 0.10% to 0.30%.

GB/T 12687.3-2010 history

• 2011 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
• 1990 GB/T 12687.3-1990 Chemical analysis of nitrate of rare earth for agriculture--Determination of arsenic content--Hydride generation flame atomic absorption spectrophotometric method

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 has been changed from 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 12687.3-2010 -All Parts