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