Parameters	Drinking water Grade Powder	Liquid Grade
Appearance	Yellow Powder	Yellow Liquid
Alumina(Al2O3) content	30.0% min	10.5% min
Salt radical degree	40-90%	N.A.
Insolubles in water	0.3% max	N.A.
pH Value (1%) Soln. N in NH4s form	3.5 – 5.0 0.01% max	3.5 – 5.0 0.01% max
As	2ppm max	2ppm max
Cr (VI)	5ppm max	5ppm max
Hg	0.1ppm max	0.1ppm max
Pb	10ppm max	10ppm max
Cd	2ppm max	2ppm max