Type of water | Public supply water | Water with CaCO3 200 ppm | ||||
Experiments | Control | (1) | (2) | (3) | (4) | (5) |
Citric Acid | ----- | 0.5 g/L | ----- | ----- | 0.5 g/L | ----- |
Acetic Acid | 0.5 g/L | ----- | 0.5 g/L | 0.5 g/L | ----- | 0.5 g/L |
Sequestering agentc | ----- | ----- | 0.5 g/L | ----- | ----- | 0.5 g/L |