our product are both in high purity and quaity,It is more cheaper than other manfacturer ,Reputation is the most important

Parameter              Guaranteed Value               Typical analysis

Appearance           Pure Deep Blue Powder            Pure Deep Blue Powder  

Copper content       15.0%±0.5%                     15.06%   

Solubility in water      Completely soluble               Completely soluble      

Water-Insoluble       0.01%                            0.005%

PH(1%sol.)             6.5±0.5                           6.22                      

EDTA-Cu-15