Inspection Item | Unit | Standard | Method | Result | |||
MgCl2 | w/% | 47 | Titration | 47.71 | |||
Ca | w/% | 0.25 | Atomic absorption spectrophotometer | 0.41 | |||
SO4 | w/% | 0.4 | UV-VIS spectrophotometer | 0.07 | |||
Fe | w/% | 0.1 | Atomic absorption spectrophotometer | 0.0013 | |||
NH4 | mg/kg | 50 | UV-VIS spectrophotometer | 25.2 | |||
Pb | mg/kg | 1 | Atomic absorption | 0.07 | |||
As | mg/kg | 0.5 | Arsenic stain method | 0.5 | |||
Water-insoluble | w/% | 0.1 | Gravimetric method | 0.05 | |||
Chroma | ≤ | 50 | Colorimetry | 50 | |||
Storage conditions | Store with air proof and dryness |