Specification :

Appearance£ºwhite powder
or solid grain
Alumina content 30%
Salt radical degree£º50-85%
Insolubles in water£º1.5% max
pH Value (1%)£º3.5-5.0
Sulfate as SO4£º9.8% max
N in NH4s form£º0.09% max
As£º5ppm max
Mn£º45ppm max