Specification Test Results

• Assay (dried substance):
  98.5 - 101.0 %
• Acidity or alkalinity:
  Passes test
• Appearance of solution:
  Passes test
• Identification (SO₄):
  Passes test
• Identification (Na):
  Passes test
• pH (25°C; 5 %):
  5.2 - 8.0
• Heavy metals (as Pb):
  Max. 5 ppm
• Insolubility in water:
  Max. 100 ppm
• Loss on drying (130°C):
  Max. 0.5 %
• Loss on ignition (800°C):
  Max. 0.5 %
• Cl (Chloride):
  Max. 100 ppm
• PO₄ (Phosphate):
  Max. 10 ppm
• Total N (Nitrogen):
  Max. 5 ppm
• As (Arsenic):
  Max. 1 ppm
• Ca (Calcium):
  Max. 50 ppm
• Fe (Iron):
  Max. 5 ppm
• K (Potassium):
  Max. 50 ppm
• Mg (Magnesium):
  Max. 25 ppm
• Conforms to Reag. Ph.Eur.:
  Passes test