Specification Test Results

• Assay:
  99.0 - 100.0 %
• pH (5 %, 20°C):
  4.5 - 6.5
• Colour of the solution:
  complying
• Clearness of the solution:
  complying
• Residue on ignition (SO₄):
  Max. 0.02 %
• Water insoluble matter:
  Max. 0.005 %
• Barium (Ba):
  Max. 20 ppm
• Calcium (Ca):
  Max. 10 ppm
• Cadmium (Cd):
  Max. 5 ppm
• Cobalt (Co):
  Max. 5 ppm
• Chromium (Cr):
  Max. 5 ppm
• Copper (Cu):
  Max. 1 ppm
• Iron (Fe):
  Max. 2 ppm
• Magnesium (Mg):
  Max. 5 ppm
• Manganese (Mn):
  Max. 5 ppm
• Sodium (Na):
  Max. 50 ppm
• Nickel (Ni):
  Max. 5 ppm
• Lead (Pb):
  Max. 5 ppm
• Zinc (Zn):
  Max. 5 ppm
• Heavy metals (as Pb):
  Max. 0.001 %
• Chloride and bromide (as Cl):
  Max. 50 ppm
• Total S (as SO₄):
  Max. 20 ppm
• Phosphate (PO₄):
  Max. 10 ppm