Purity: (same/more than) 99.0%
Insoluble Matter: (same/less than) 0.010%
pH (5% Solution at 25C): 5.5-8.5
Chloride: (same/less than) 0.001%
Nitrogen Compounds (as N): (same/less than) 0.0005%
Calcium: (same/less than) 0.01%
Magnesium: (same/less than) 0.005%
Heavy Metals (as Pb): (same/less than) 0.0005%
Iron: (same/less than) 0.0005%
Sodium: (same/less than) 0.02%