Specification Test Results

• Appearance:
  White to yellow to beige to grey Powder or crystals
• Assay:
  ≥82 % (WO3)
• Chloride (Cl):
  ≤20 ppm
• Sulfate (SO4):
  ≤50 ppm
• Ammonium (NH4):
  ≤50 ppm
• Iron (Fe):
  ≤30 ppm
• Sodium (Na):
  ≤100 ppm
• Heavy metals (as Pb):
  ≤40 ppm
• Loss on ignition:
  ≤17 % (800°C)