- Xét nghiệm (đo độ axit, NH₃): ≥ 25,0 %
- Màu sắc: ≤ 10 Hazen
- Cacbonat (dưới dạng CO₃): ≤ 10 ppm
- Clorua (Cl): ≤ 500 ppb
- Phốt phát (PO₄): ≤ 50 ppb
- Sunfat (SO₄): ≤ 500 ppb
- Ag (Bạc): ≤ 0,5 ppb
- Al (Nhôm): ≤ 5,0 ppb
- As (Thạch tín): ≤ 1,0 ppb
- Au (Vàng): ≤ 0,5 ppb
- Ba (Bari): ≤ 0,5 ppb
- Be (Beryllium): ≤ 0,5 ppb
- Bi (Bismuth): ≤ 0,5 ppb
- Ca (Canxi): ≤ 2,0 ppb
- Cd (Cadimi): ≤ 0,5 ppb
- Co (Coban): ≤ 0,5 ppb
- Cr (Crom): ≤ 1,0 ppb
- Cu (Đồng): ≤ 1,0 ppb
- Fe (Sắt): ≤ 2,0 ppb
- Ga (Gali): ≤ 0,5 ppb
- Ge (Germani): ≤ 0,5 ppb
- Hg (Thủy ngân): ≤ 2,0 ppb
- Trong (Indi): ≤ 0,5 ppb
- K (Kali): ≤ 2,0 ppb
- Li (Liti): ≤ 0,5 ppb
- Mg (Magiê): ≤ 2,0 ppb
- Mn (Mangan): ≤ 0,5 ppb
- Mo (Molypden): ≤ 0,5 ppb
- Na (Natri): ≤ 10,0 ppb
- Ni (Niken): ≤ 1,0 ppb
- Pb (Chì): ≤ 0,5 ppb
- Pt (Bạch kim): ≤ 0,5 ppb
- Sb (Antimon): ≤ 0,5 ppb
- Sn (Thiếc): ≤ 0,5 ppb
- Sr (Stronti): ≤ 0,5 ppb
- Ti (Titan): ≤ 0,5 ppb
- Tl (Thallium): ≤ 0,5 ppb
- V (Vanadi): ≤ 0,5 ppb
- Zn (Kẽm): ≤ 1,0 ppb
- Zr (Zirconium): ≤ 0,5 ppb
- Cặn khi đánh lửa (dưới dạng sunfat): ≤ 2 ppm
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