Reagents

Specifications

Ammonia (NH3) % 30.0-34.0 Chloride (Cl) % Max 0.0035 Phosphate (PO4) % Max 0.001 Sulfate (SO4) % Max 0.005 Iron (Fe) % Max 0.001 Residue on ignition (as SO4) % Max 0.1 Heavy metals (as Pb) % Max 0.001

Specifications

Assay (after drying) % Min 99.5 Insoluble matter % Max 0.005 pH (5%; water) 4.5-6.0 Arsenic (As) % Max 0.0002 Barium (Ba) % Max 0.002 Calcium (Ca) % Max 0.01 Copper (Cu) % Max 0.0003 Magnesium (Mg) % Max 0.002 Residue on ignition % Max 0.01 Loss on drying at 100°C % Max 0.1 Bromate (BrO ) % Max 0.001 3 Chloride (Cl) % Max 0.2 Iodide (I) % Max 0.025 Sulfate (SO ) % Max 0.005 4 Iron (Fe) % Max 0.0005 Heavy metals (as Pb) % Max 0.0005

Specifications

Assay (as Al2(SO4)3; complexometric) 51-59 % pH (2% water) 2.5 - 4.0 Chloride (Cl) Max 0.005 % Heavy metals (as Pb) Max 0.002 % Ammonium (NH4) Max 0.005 % Arsenic (As) Max 0.001 % Calcium (Ca) Max 0.02 % Iron (Fe) Max 0.005 % Potassium (K) Max 0.2 % Alkalies & alkaline earth metals Max 0.4 %

Specifications

Assay (as Al2(SO4)3.18H2O]complexametric)98 - 102 % Insoluble matter Max 0.01 % Reaction Min pH 2.5 Chloride (CI) Max 0.001 % Ammonium (NH4) Max 0.01 % Copper (Cu) Max 0.001 % Iron (Fe) Max 0.002 % Heavy metals (as Pb) Max 0.001 % Calcium (Ca) Max 0.01 % Magnesium (Mg) Max 0.002 % Potassium (K) Max 0.005 % Sodium (Na) Max 0.02 % Substance not precipitated by ammonia(as SO4)Max 0.2 % Appearance A white crystalline powder

Specifications

Assay (AT) % Min 99 Sulfate (SO4) % Max 0.005 Calcium (Ca) % Max 0.01 Cadmium (Cd) % Max 0.005 Cobalt (Co) % Max 0.005 Copper (Cu) % Max 0.005 Iron (Fe) % Max 0.005 Potassium (K) % Max 0.01 Sodium (Na) % Max 0.05 Nickel (Ni) % Max 0.005 Lead (Pb) % Max 0.005 Zinc (Zn) % Max 0.005