S:      Satisfactory

L:      Limited

NS:   Not Satisfactory

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Sat. sol:

Saturated aqueous solution, prepared at 20°C

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Sol:

Aqueous solution at a concentration higher than 10%, but not saturated

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Dil. sol:

Dilute aqueous solution at a concentration equal to or lower than 10%

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Work. sol:

Aqueous solution having the usual concentration for industrial use