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Absorbency testing is used to determine the percentage of ZnCl 2 or NH 4 Cl solution absorbed by a hydroponics gel (HPG). It is found that the absorbency of ZnCl 2 or NH 4 Cl solution decreases with increasing solution concentration. The conductivity of ZnCl 2 - and NH 4 Cl-HPG electrolytes is dependent on the solution concentration. A mixture of salt...
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