Reagents

Specifications

Appearance White powder or chunks Assay Min 99.5% ZrO2 + HfO2 Min 35.0%

Specifications

Assay (as ZrO2+HfO2) Min 97 % Silicate (SiO2) Max 0.25 % Titanium (TiO2) Max 0.16 % Iron (Fe2O3) Max 0.07 % Loss on ignition (at 1000°C) Max 3.0 % Appearance White crystalline powder

Specifications

Assay Min 99 % Chloride (Cl) Max 0.002 % Iron (Fe) Max 0.005 % Lead (Pb) Max 0.005 % Appearance White crystalline powder

Specifications

Assay (complexometric) 99.0 - 103.5 % Insoluble matter (10% in water) Max 0.01 % pH pH 4.4 - 6.0 Chloride (Cl) Max 0.0005 % Calcium (Ca) Max 0.005 % Iron (Fe) Max 0.001 % Potassium (K) Max 0.01 % Magnesium (Mg) Max 0.005 % Sodiim (Na) Max 0.005 % Ammonium (NH4) Max 0.001 % Nitrate (NO3) Max 0.002 % Manganese (Mn) Max 0.0003 % Lead (Pb) Max 0.003 % Appearance White crystalline powder

Specifications

Assay (complexometric) Min 99 % Substance insoluble in dilute H2SO4 Max 0.01 % Free alkali Passes test Chloride (Cl) Max 0.001 % Sulphate (SO4) Max 0.01 % Total nitrogen (N) Max 0.0005 % Lead (Pb) Max 0.002 % Copper (Cu) Max 0.0005 % Iron (Fe) Max 0.0005 % Manganese (Mn) Max 0.0005 % Cadmium (Cd) Max 0.0005 % Arsenic (As) Max 0.0001 % Calcium (Ca) Max 0.001 % Sodium (Na) Max 0.001 % Substance reducing KMnO4 (as O) Max 0.0008 % Appearance White powder

Specifications

Assay Min 98 % Insoluble matter in water Max 0.005 % Chloride (Cl) Max 0.001 % Sulphate (SO4) Max 0.005 % Cadmium (Cd) Max 0.0005 % Calcium (Ca) Max 0.001 % Copper (Cu) Max 0.0005 % Lead (Pb) Max 0.001 % Magnesium (Mg) Max 0.001 % Nickel (Ni) Max 0.0005 % Potassium (K) Max 0.001 % Sodium (Na) Max 0.001 % Iron (Fe) Max 0.0005 % Appearance Colorless crystals

Specifications

Assay (ex total Zn) Min 97.0 % Zinc oxide (ZnO) Max 4.0 % Iron (Fe) Max 0.005 % Lead (Pb) Max 0.005 % Appearance White crystalline hygroscopic powder

Specifications

Assay Min 98 % Oxide chloride (as ZnO) Passes test Sulphate (SO4) Max 0.01 % Calcium (Ca) Max 0.06 % Iron (Fe) Max 0.001 % Lead (Pb) Max 0.005 % Magnesium (Mg) Max 0.01 % Potassium (K) Max 0.02 % Sodium (Na) Max 0.05 % Insoluble matter Max 0.005 % Nitrate (NO3) Max 0.003 % Ammonium (NH4) Max 0.005 % Appearance White crystalline hygroscopic powder

Specifications

Assay (as Zn) Min 47.0 % Chloride (Cl) Max.0.05 % Sulfate (SO4) Max.0.5 % Arsenic (As) Max.0.0005 % Lead (Pb) Max.0.002 % Calcium (Ca) Max.0.5 % Iron (Fe) Max.0.02 % Residue on ignition 70 - 74 % Appearance White powder

Specifications

Assay (complexometric) Min 99.9 % Lead (Pb) Max 0.005 % Tin (Sn) Max 0.005 % Copper (Cu) Max 0.001 % Iron (Fe) Max 0.02 % Cadmium (Cd) Max 0.0005 % Arsenic (As) Max 0.00001 % Appearance Silver gray metallic granules

Specifications

Assay Min 99.9 % Appearance White powder

Specifications

Acidic range pH 1.2 - 3.8 Alkaline range pH 8.0 - 9.6

Specifications

Assay (by GC) Min. 98 % Acidity/alkalinity (meq/g) Max 0.00001 % Benzene Max 0.05 % Calcium (Ca) Max 0.00005 % Colour APHA Max 10 Copper (Cu) Max 0.000005 % Iron (Fe) Max 0.00001 % Lead (Pb) Max 0.000005 % Magnesium (Mg) Max 0.00002 % Potassium (K) Max 0.00005 % Residue after evaporation (ppm) Max 20 Residue after evaporation Max 0.002 % Toluene Max 1 % Sodium (Na) Max 0.00005 % Substances reducing KMnO4 Max 0.0005 %

Specifications

Assay Min. 98.0% Heavy metals (as Pb) Max. 0.001%

Specifications

œ max 640 - 651 nm 1200 - 1400 œ Max 521 - 524 nm 650 - 850 Sulfated ash % Max 5.0 Loss on drying % Max 10.0

Specifications

Assay 0.1 M+/- 0.004M Appearance A dark orange to brown solution

Specifications

Gradient analysis (max. eluted peak) A.U. Max 0.002 Residue after evaporation Max 0.0005 % Residue after ignition Max 0.0003 % Conductivity Microsiemen/cm Max 5 Appearance Clear colourless Mobile liquid

Specifications

Non-volatilematter Max 0.0001 % Silver(Ag) Max 0.00001 % Aluminium(Al) Max 0.00005 % Barium(Ba) Max 0.00001 % Calcium(Ca) Max 0.00001 % Cadmium(Cd) Max 0.000005 % Cobalt(Co) Max 0.000002 % HPLC Gradient at 210nm Max.5m AU HPLC Gradient at 254nm Max.1m AU Suitability fort he LC-MS complying Fluorescence (chinin) at 254nm Max 0.0001 % Fluorescence (chinin )at 365nm Max 0.0001 % Absorbance at 210nm Max.0.004 Absorbance at 210nm Max.0.022 Absorbanceat230nm Max.0.004 Transmittance at 210nm Min.95 %