Parameter

1. ammonia 2 items
2. ammonium 2 items
3. Calcium 1 item
4. Carbon Dioxide 1 item
5. Chloride 1 item
6. Conductivity 3 items
7. Lead 1 item
8. pH 7 items

chemical_type

1. acid 2 items
2. buffer 8 items
3. indicator 9 items
4. other 4 items
5. salt 1 item
6. standard 7 items

Brands

Less