Specification Test Results

• Appearance:
  Blue-green to blue Crystalline powder or crystals
• Titration Iodometric:
  ≥99.0 %
• pH:
  3.0 to 3.8 (5 % in water 20°C)
• Sulfate (SO4):
  ≤50 ppm
• Arsenic (As):
  ≤1 ppm
• Calcium (Ca):
  ≤20 ppm
• Iron (Fe):
  ≤10 ppm
• Lead (Pb):
  ≤40 ppm
• Magnesium (Mg):
  ≤20 ppm
• Nickel (Ni):
  ≤50 ppm
• Potassium (K):
  ≤20 ppm
• Nitrogen compounds (as N):
  ≤0.004 %