SPECIFICATION

LR

AR

ACS

Insoluble Matter

---

0.003%

0.005%

pH of a 0.01 M solution

9.2 – 9.5

9.1 – 9.3

9.15 – 9.20

Chloride (Cl)

0.02%

0.0005%

0.001%

Boric Oxide (B₂O₃)

---

0.2%

---

Sodium Oxide (Na₂O)

---

0.2%

---

Carbonate (CO₃)

---

0.05%

---

Sulphate (SO₄)

0.05%

0.0025%

0.005%

Heavy Metals (as Pb)

---

0.0005%

0.001%

Iron (Fe)

0.02%

0.0005%

0.0005%

Phosphate (PO₄)

---

0.001%

0.001%

Calcium (Ca)

---

0.002%

0.005%

Copper (Cu)

---

0.0005%

---

Magnesium (Mg)

---

0.002%

---

Assay

NLT 98.5%

NLT 99.5%

99.5 – 101%