1/20
Phosphate
2/20
Cyanide
3/20
Sulfate
4/20
Permanganate
5/20
Chromate
6/20
Sulfite
7/20
Hydroxide
8/20
Hypochlorite
9/20
Chlorate
10/20
Acetate
11/20
Nitrite
12/20
Hydrogen Carbonate
13/20
Nitrate
14/20
Dihydrogen Phosphate
15/20
Hydrogen Phosphate
16/20
Ammonium
17/20
Dichromate
18/20
Carbonate
19/20
Chlorite