Item	Index
Aluminium Sulphate	15.8%	17%
Al2O3                               % min	15.8	17
Iron Fe content                        %max	0.50	0.005
Water insoluble matter                  % max	0.15	0.15
PH value 1% aqueous solution              min	3.0	3.0
Heavy metals as Pb                    % max	0.002	0.002
AS                                 % max	0.0005	0.0005
Granularity                            min	--	15