Conductivity Standard 1.413 or 2.76 – 250ml Growth Technology
The two most important factors in nutrient and water management are conductivity and pH, and a good understanding of these variables is essential for successful hydroponic gardening.
The conductivity of a solution is an expression of the capacity of that solution to conduct an electric current. Distilled or de-ionised water will conduct virtually no electricity at all and therefore will have a conductivity reading of zero. As salts are dissolved in the water so the conductivity of the solution increases.
The conductivity of a nutrient solution is therefore a measurement of its “strength” as indicated by the actual amount of salts dissolved.