Optimal Level of Product

First Class product

Qualified Product

Description of Good %

KNO₃          ≥

99.7

99.4

99.0

K₂CO₃           ≤

0.01

0.01

-

Nitrate (N)      ≥

13.5

Cl-                    ≤

0.01

0.02

0.10

Moisture        ≤

0.10

0.20

0.30

Water Insoluble  ≤

0.01

0.02

0.05

Sulfate (SO₄)    ≤

0.005

0.01

-

Moisture absorption rate  ≤

0.25

0.30

-

Fe             ≤

0.003

-

-