Electrical conductivity (EC) – the ability of the solution to conduct electric current, as well as the physical quantity characterizing this ability. In the International System of Units (SI), the unit for measuring electrical conductivity is Siemens (Cm). Conductivity is used to measure the salinity (salinity) of a solution.
For the analysis of nutrient solutions, use specific conductivity, which is measured in siemens per meter (S / m) or millisiemens per centimeter (mS / cm). To measure electrical conductivity, a device is used – conductometer (EC meter).
Recommendations for the conductivity of the solution:
- shoots – 0.4-0.6 mS / cm;
- seedling – 1.2-1.5 mS / cm;
- growth, flowering and fruiting – 1.5-2.2 mS / cm.
* Note! mS / cm in the international system of units is denoted as “mS / cm”.
1 mS / cm = 1000 μS / cm [1 mS / cm = 1000 μS / cm]
