Type of water

Public supply water

Water with CaCO3 200 ppm

Experiments

Control

(1)

(2)

(3)

(4)

(5)

Citric Acid

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0.5 g/L

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-----

0.5 g/L

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Acetic Acid

0.5 g/L

-----

0.5 g/L

0.5 g/L

-----

0.5 g/L

Sequestering agentc

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-----

0.5 g/L

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0.5 g/L