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